Search a number
-
+
12965892 = 2231080491
BaseRepresentation
bin110001011101…
…100000000100
3220101201212020
4301131200010
511304402032
61141523140
7215131302
oct61354004
926351766
1012965892
117356515
1244134b0
1328bc834
141a17272
151211b2c
hexc5d804

12965892 has 12 divisors (see below), whose sum is σ = 30253776. Its totient is φ = 4321960.

The previous prime is 12965879. The next prime is 12965921. The reversal of 12965892 is 29856921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×129658922 = 336228710711328, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540234 + ... + 540257.

It is an arithmetic number, because the mean of its divisors is an integer number (2521148).

Almost surely, 212965892 is an apocalyptic number.

12965892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12965892 is an abundant number, since it is smaller than the sum of its proper divisors (17287884).

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

12965892 is a wasteful number, since it uses less digits than its factorization.

12965892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080498 (or 1080496 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 12965892 is about 3600.8182403448. The cubic root of 12965892 is about 234.9276493736.

The spelling of 12965892 in words is "twelve million, nine hundred sixty-five thousand, eight hundred ninety-two".

Divisors: 1 2 3 4 6 12 1080491 2160982 3241473 4321964 6482946 12965892