12928900 has 18 divisors (see below), whose sum is σ = 28055930. Its totient is φ = 5171520.

The previous prime is 12928897. The next prime is 12928907. The reversal of 12928900 is 982921.

It can be written as a sum of positive squares in 3 ways, for example, as 1218816 + 11710084 = 1104^2 + 3422^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12928907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64545 + ... + 64744.

Almost surely, 2^12928900 is an apocalyptic number.

12928900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12928900 is an abundant number, since it is smaller than the sum of its proper divisors (15127030).

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

12928900 is a wasteful number, since it uses less digits than its factorization.

12928900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129303 (or 129296 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 12928900 is about 3595.6779611083. The cubic root of 12928900 is about 234.7040184963.

The spelling of 12928900 in words is "twelve million, nine hundred twenty-eight thousand, nine hundred".