21036792 has 32 divisors (see below), whose sum is σ = 60105600. Its totient is φ = 6010464.

The previous prime is 21036791. The next prime is 21036797. The reversal of 21036792 is 29763012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21036791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62442 + ... + 62777.

It is an arithmetic number, because the mean of its divisors is an integer number (1878300).

Almost surely, 2^21036792 is an apocalyptic number.

It is an amenable number.

21036792 is an abundant number, since it is smaller than the sum of its proper divisors (39068808).

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

21036792 is a wasteful number, since it uses less digits than its factorization.

21036792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125235 (or 125231 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 21036792 is about 4586.5882745239. The cubic root of 21036792 is about 276.0534448067.

The spelling of 21036792 in words is "twenty-one million, thirty-six thousand, seven hundred ninety-two".