21334752 has 60 divisors (see below), whose sum is σ = 62752536. Its totient is φ = 7110720.

The previous prime is 21334723. The next prime is 21334759. The reversal of 21334752 is 25743312.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334759) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1524 + ... + 6707.

Almost surely, 2^21334752 is an apocalyptic number.

It is an amenable number.

21334752 is an abundant number, since it is smaller than the sum of its proper divisors (41417784).

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

21334752 is an equidigital number, since it uses as much as digits as its factorization.

21334752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253 (or 8236 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 21334752 is about 4618.9557261355. The cubic root of 21334752 is about 277.3506574073.

The spelling of 21334752 in words is "twenty-one million, three hundred thirty-four thousand, seven hundred fifty-two".