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164610072 = 2332111910939
BaseRepresentation
bin10011100111111…
…00000000011000
3102110202001120100
421303330000120
5314120010242
624200055400
74036106514
oct1163740030
9373661510
10164610072
1184a10a90
1247164560
1328145c13
1417c0d144
15e6b854c
hex9cfc018

164610072 has 96 divisors (see below), whose sum is σ = 511992000. Its totient is φ = 47252160.

The previous prime is 164610049. The next prime is 164610097. The reversal of 164610072 is 270016461.

164610072 is a `hidden beast` number, since 1 + 646 + 10 + 0 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9579 + ... + 20517.

It is an arithmetic number, because the mean of its divisors is an integer number (5333250).

Almost surely, 2164610072 is an apocalyptic number.

164610072 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 164610072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255996000).

164610072 is an abundant number, since it is smaller than the sum of its proper divisors (347381928).

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

164610072 is a wasteful number, since it uses less digits than its factorization.

164610072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10981 (or 10974 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 164610072 is about 12830.0456741198. The cubic root of 164610072 is about 548.0482579556.

The spelling of 164610072 in words is "one hundred sixty-four million, six hundred ten thousand, seventy-two".

Divisors: 1 2 3 4 6 8 9 11 12 18 19 22 24 33 36 38 44 57 66 72 76 88 99 114 132 152 171 198 209 228 264 342 396 418 456 627 684 792 836 1254 1368 1672 1881 2508 3762 5016 7524 10939 15048 21878 32817 43756 65634 87512 98451 120329 131268 196902 207841 240658 262536 360987 393804 415682 481316 623523 721974 787608 831364 962632 1082961 1247046 1443948 1662728 1870569 2165922 2286251 2494092 2887896 3741138 4331844 4572502 4988184 6858753 7482276 8663688 9145004 13717506 14964552 18290008 20576259 27435012 41152518 54870024 82305036 164610072