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164241252 = 223272343659
BaseRepresentation
bin10011100101000…
…01111101100100
3102110001022122100
421302201331210
5314021210002
624144132100
74033012320
oct1162417544
9373038570
10164241252
118478997a
1247007030
1328047096
1417b54980
15e64411c
hex9ca1f64

164241252 has 144 divisors (see below), whose sum is σ = 507386880. Its totient is φ = 43775424.

The previous prime is 164241241. The next prime is 164241257. The reversal of 164241252 is 252142461.

164241252 is a `hidden beast` number, since 1 + 642 + 4 + 12 + 5 + 2 = 666.

164241252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (164241257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248899 + ... + 249557.

It is an arithmetic number, because the mean of its divisors is an integer number (3523520).

Almost surely, 2164241252 is an apocalyptic number.

164241252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164241252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253693440).

164241252 is an abundant number, since it is smaller than the sum of its proper divisors (343145628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164241252 is a wasteful number, since it uses less digits than its factorization.

164241252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 737 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 164241252 is about 12815.6643214466. The cubic root of 164241252 is about 547.6386388133.

The spelling of 164241252 in words is "one hundred sixty-four million, two hundred forty-one thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 23 28 36 42 43 46 63 69 84 86 92 126 129 138 161 172 207 252 258 276 301 322 387 414 483 516 602 644 659 774 828 903 966 989 1204 1318 1449 1548 1806 1932 1977 1978 2636 2709 2898 2967 3612 3954 3956 4613 5418 5796 5931 5934 6923 7908 8901 9226 10836 11862 11868 13839 13846 15157 17802 18452 20769 23724 27678 27692 28337 30314 35604 41517 41538 45471 55356 56674 60628 62307 83034 83076 85011 90942 106099 113348 124614 136413 166068 170022 181884 198359 212198 249228 255033 272826 318297 340044 396718 424396 510066 545652 595077 636594 651751 793436 954891 1020132 1190154 1273188 1303502 1785231 1909782 1955253 2380308 2607004 3570462 3819564 3910506 4562257 5865759 7140924 7821012 9124514 11731518 13686771 18249028 23463036 27373542 41060313 54747084 82120626 164241252