12911970 has 32 divisors (see below), whose sum is σ = 32337792. Its totient is φ = 3293312.

The previous prime is 12911957. The next prime is 12911999. The reversal of 12911970 is 7911921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8667 + ... + 10046.

It is an arithmetic number, because the mean of its divisors is an integer number (1010556).

Almost surely, 2^12911970 is an apocalyptic number.

12911970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12911970 is an abundant number, since it is smaller than the sum of its proper divisors (19425822).

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

12911970 is a wasteful number, since it uses less digits than its factorization.

12911970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18746.

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 12911970 is about 3593.3229746295. The cubic root of 12911970 is about 234.6015278305.

The spelling of 12911970 in words is "twelve million, nine hundred eleven thousand, nine hundred seventy".