21412600 has 48 divisors (see below), whose sum is σ = 54315720. Its totient is φ = 7785600.

The previous prime is 21412591. The next prime is 21412621. The reversal of 21412600 is 621412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2667 + ... + 7066.

Almost surely, 2^21412600 is an apocalyptic number.

21412600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21412600 is an abundant number, since it is smaller than the sum of its proper divisors (32903120).

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

21412600 is a wasteful number, since it uses less digits than its factorization.

21412600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9760 (or 9751 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21412600 is about 4627.3750658446. The cubic root of 21412600 is about 277.6875879052.

The spelling of 21412600 in words is "twenty-one million, four hundred twelve thousand, six hundred".