12457900 has 108 divisors (see below), whose sum is σ = 34195728. Its totient is φ = 3836160.

The previous prime is 12457897. The next prime is 12457919. The reversal of 12457900 is 975421.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 336682 + ... + 336718.

Almost surely, 2^12457900 is an apocalyptic number.

12457900 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 12457900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17097864).

12457900 is an abundant number, since it is smaller than the sum of its proper divisors (21737828).

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

12457900 is a wasteful number, since it uses less digits than its factorization.

12457900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12457900 is about 3529.5750452427. The cubic root of 12457900 is about 231.8186007705.

The spelling of 12457900 in words is "twelve million, four hundred fifty-seven thousand, nine hundred".