12555400 has 96 divisors (see below), whose sum is σ = 34372800. Its totient is φ = 4204800.

The previous prime is 12555397. The next prime is 12555443. The reversal of 12555400 is 455521.

12555400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28381 + ... + 28819.

It is an arithmetic number, because the mean of its divisors is an integer number (358050).

Almost surely, 2^12555400 is an apocalyptic number.

12555400 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 12555400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17186400).

12555400 is an abundant number, since it is smaller than the sum of its proper divisors (21817400).

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

12555400 is a wasteful number, since it uses less digits than its factorization.

12555400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 12555400 is about 3543.3599873566. The cubic root of 12555400 is about 232.4217951027.

The spelling of 12555400 in words is "twelve million, five hundred fifty-five thousand, four hundred".