21935532 has 24 divisors (see below), whose sum is σ = 51948736. Its totient is φ = 7202448.

The previous prime is 21935531. The next prime is 21935549. The reversal of 21935532 is 23553912.

It is a self number, because there is not a number n which added to its sum of digits gives 21935532.

It is not an unprimeable number, because it can be changed into a prime (21935531) 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, 12838 + ... + 14445.

Almost surely, 2^21935532 is an apocalyptic number.

It is an amenable number.

21935532 is an abundant number, since it is smaller than the sum of its proper divisors (30013204).

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

21935532 is a wasteful number, since it uses less digits than its factorization.

21935532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27357 (or 27355 counting only the distinct ones).

The product of its digits is 8100, while the sum is 30.

The square root of 21935532 is about 4683.5384059491. The cubic root of 21935532 is about 279.9299654774.

The spelling of 21935532 in words is "twenty-one million, nine hundred thirty-five thousand, five hundred thirty-two".