12920628 has 24 divisors (see below), whose sum is σ = 34455232. Its totient is φ = 3691584.

The previous prime is 12920581. The next prime is 12920647. The reversal of 12920628 is 82602921.

It is a junction number, because it is equal to n+sod(n) for n = 12920595 and 12920604.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 76825 + ... + 76992.

Almost surely, 2^12920628 is an apocalyptic number.

It is an amenable number.

12920628 is an abundant number, since it is smaller than the sum of its proper divisors (21534604).

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

12920628 is a wasteful number, since it uses less digits than its factorization.

12920628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153831 (or 153829 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12920628 is about 3594.5275071976. The cubic root of 12920628 is about 234.6539527303.

The spelling of 12920628 in words is "twelve million, nine hundred twenty thousand, six hundred twenty-eight".