21935932 has 6 divisors (see below), whose sum is σ = 38387888. Its totient is φ = 10967964.

The previous prime is 21935917. The next prime is 21935939. The reversal of 21935932 is 23953912.

It is a super-2 number, since 2×21935932² = 962370225417248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21935939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2741988 + ... + 2741995.

Almost surely, 2^21935932 is an apocalyptic number.

It is an amenable number.

21935932 is a deficient number, since it is larger than the sum of its proper divisors (16451956).

21935932 is a wasteful number, since it uses less digits than its factorization.

21935932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483987 (or 5483985 counting only the distinct ones).

The product of its digits is 14580, while the sum is 34.

The square root of 21935932 is about 4683.5811085109. The cubic root of 21935932 is about 279.9316669984.

The spelling of 21935932 in words is "twenty-one million, nine hundred thirty-five thousand, nine hundred thirty-two".