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13051872 = 253245319
BaseRepresentation
bin110001110010…
…011111100000
3220120002210200
4301302133200
511320124442
61143425200
7215640051
oct61623740
926502720
1013051872
117405079
124455200
13291ca02
141a3a728
15122c34c
hexc727e0

13051872 has 36 divisors (see below), whose sum is σ = 37117080. Its totient is φ = 4350528.

The previous prime is 13051867. The next prime is 13051873. The reversal of 13051872 is 27815031.

13051872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13051873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22372 + ... + 22947.

It is an arithmetic number, because the mean of its divisors is an integer number (1031030).

Almost surely, 213051872 is an apocalyptic number.

13051872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13051872 is an abundant number, since it is smaller than the sum of its proper divisors (24065208).

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

13051872 is a wasteful number, since it uses less digits than its factorization.

13051872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45335 (or 45324 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 13051872 is about 3612.7374662436. The cubic root of 13051872 is about 235.4457933036.

The spelling of 13051872 in words is "thirteen million, fifty-one thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 45319 90638 135957 181276 271914 362552 407871 543828 725104 815742 1087656 1450208 1631484 2175312 3262968 4350624 6525936 13051872