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12907906 = 211586723
BaseRepresentation
bin110001001111…
…010110000010
3220021210022121
4301033112002
511301023111
61140354454
7214500244
oct61172602
926253277
1012907906
1173169a0
1243a5a2a
13289c31b
141a00094
1511ee871
hexc4f582

12907906 has 8 divisors (see below), whose sum is σ = 21122064. Its totient is φ = 5867220.

The previous prime is 12907903. The next prime is 12907919. The reversal of 12907906 is 60970921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×129079062 = 333228074609672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12907903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293340 + ... + 293383.

It is an arithmetic number, because the mean of its divisors is an integer number (2640258).

Almost surely, 212907906 is an apocalyptic number.

12907906 is a deficient number, since it is larger than the sum of its proper divisors (8214158).

12907906 is a wasteful number, since it uses less digits than its factorization.

12907906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586736.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 12907906 is about 3592.7574368443. The cubic root of 12907906 is about 234.5769118952.

The spelling of 12907906 in words is "twelve million, nine hundred seven thousand, nine hundred six".

Divisors: 1 2 11 22 586723 1173446 6453953 12907906