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163513012 = 221319359461
BaseRepresentation
bin10011011111100…
…00001010110100
3102101200022200111
421233300022310
5313324404022
624120352404
74023560215
oct1157601264
9371608614
10163513012
1184331823
1246915704
1327b50780
1417a0540c
15e54d477
hex9bf02b4

163513012 has 48 divisors (see below), whose sum is σ = 325987200. Its totient is φ = 71141760.

The previous prime is 163512989. The next prime is 163513019. The reversal of 163513012 is 210315361.

It is a happy number.

163513012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163513019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354462 + ... + 354922.

It is an arithmetic number, because the mean of its divisors is an integer number (6791400).

Almost surely, 2163513012 is an apocalyptic number.

It is an amenable number.

163513012 is a deficient number, since it is larger than the sum of its proper divisors (162474188).

163513012 is a wasteful number, since it uses less digits than its factorization.

163513012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 163513012 is about 12787.2206518852. The cubic root of 163513012 is about 546.8280360083.

Adding to 163513012 its reverse (210315361), we get a palindrome (373828373).

The spelling of 163513012 in words is "one hundred sixty-three million, five hundred thirteen thousand, twelve".

Divisors: 1 2 4 13 19 26 38 52 76 247 359 461 494 718 922 988 1436 1844 4667 5993 6821 8759 9334 11986 13642 17518 18668 23972 27284 35036 88673 113867 165499 177346 227734 330998 354692 455468 661996 2151487 3144481 4302974 6288962 8605948 12577924 40878253 81756506 163513012