21596952 has 32 divisors (see below), whose sum is σ = 58146480. Its totient is φ = 6645120.

The previous prime is 21596951. The next prime is 21596959. The reversal of 21596952 is 25969512.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 21596952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21596951) 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, 34299 + ... + 34922.

Almost surely, 2^21596952 is an apocalyptic number.

It is an amenable number.

21596952 is an abundant number, since it is smaller than the sum of its proper divisors (36549528).

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

21596952 is a wasteful number, since it uses less digits than its factorization.

21596952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69243 (or 69239 counting only the distinct ones).

The product of its digits is 48600, while the sum is 39.

The square root of 21596952 is about 4647.2520912901. The cubic root of 21596952 is about 278.4822298054.

The spelling of 21596952 in words is "twenty-one million, five hundred ninety-six thousand, nine hundred fifty-two".