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12907212 = 2231075601
BaseRepresentation
bin110001001111…
…001011001100
3220021202100220
4301033023030
511301012322
61140351340
7214465233
oct61171314
926252326
1012907212
11731641a
1243a5550
13289bc06
1419ddb1a
1511ee55c
hexc4f2cc

12907212 has 12 divisors (see below), whose sum is σ = 30116856. Its totient is φ = 4302400.

The previous prime is 12907183. The next prime is 12907217. The reversal of 12907212 is 21270921.

12907212 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 (12).

It is a super-2 number, since 2×129072122 = 333192243225888, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (12907217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537789 + ... + 537812.

It is an arithmetic number, because the mean of its divisors is an integer number (2509738).

Almost surely, 212907212 is an apocalyptic number.

12907212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12907212 is an abundant number, since it is smaller than the sum of its proper divisors (17209644).

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

12907212 is a wasteful number, since it uses less digits than its factorization.

12907212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075608 (or 1075606 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12907212 is about 3592.6608523489. The cubic root of 12907212 is about 234.5727077716.

The spelling of 12907212 in words is "twelve million, nine hundred seven thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 1075601 2151202 3226803 4302404 6453606 12907212