12929818 has 36 divisors (see below), whose sum is σ = 22505994. Its totient is φ = 5566000.

The previous prime is 12929803. The next prime is 12929857. The reversal of 12929818 is 81892921.

It can be written as a sum of positive squares in only one way, i.e., 7745089 + 5184729 = 2783^2 + 2277^2 .

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

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 127968 + ... + 128068.

Almost surely, 2^12929818 is an apocalyptic number.

12929818 is a deficient number, since it is larger than the sum of its proper divisors (9576176).

12929818 is a wasteful number, since it uses less digits than its factorization.

12929818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 137 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 12929818 is about 3595.8056120986. The cubic root of 12929818 is about 234.7095733176.

The spelling of 12929818 in words is "twelve million, nine hundred twenty-nine thousand, eight hundred eighteen".