12930820 has 24 divisors (see below), whose sum is σ = 31034304. Its totient is φ = 4433376.

The previous prime is 12930803. The next prime is 12930823. The reversal of 12930820 is 2803921.

It is a super-2 number, since 2×12930820² = 334412211744800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12930823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46042 + ... + 46321.

It is an arithmetic number, because the mean of its divisors is an integer number (1293096).

Almost surely, 2^12930820 is an apocalyptic number.

12930820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12930820 is an abundant number, since it is smaller than the sum of its proper divisors (18103484).

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

12930820 is a wasteful number, since it uses less digits than its factorization.

12930820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92379 (or 92377 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 12930820 is about 3595.9449383994. The cubic root of 12930820 is about 234.7156361232.

The spelling of 12930820 in words is "twelve million, nine hundred thirty thousand, eight hundred twenty".