12497920 has 44 divisors (see below), whose sum is σ = 29992644. Its totient is φ = 4997120.

The previous prime is 12497909. The next prime is 12497951. The reversal of 12497920 is 2979421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2663424 + 9834496 = 1632^2 + 3136^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3900 + ... + 6340.

It is an arithmetic number, because the mean of its divisors is an integer number (681651).

Almost surely, 2^12497920 is an apocalyptic number.

12497920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12497920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14996322).

12497920 is an abundant number, since it is smaller than the sum of its proper divisors (17494724).

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

12497920 is an equidigital number, since it uses as much as digits as its factorization.

12497920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466 (or 2448 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12497920 is about 3535.2397372738. The cubic root of 12497920 is about 232.0665682935.

The spelling of 12497920 in words is "twelve million, four hundred ninety-seven thousand, nine hundred twenty".