21082032 has 50 divisors (see below), whose sum is σ = 61021268. Its totient is φ = 7026912.

The previous prime is 21082021. The next prime is 21082063. The reversal of 21082032 is 23028012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21081996 and 21082014.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6838 + ... + 9429.

Almost surely, 2^21082032 is an apocalyptic number.

It is an amenable number.

21082032 is an abundant number, since it is smaller than the sum of its proper divisors (39939236).

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

21082032 is a wasteful number, since it uses less digits than its factorization.

21082032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16287 (or 16272 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 21082032 is about 4591.5173962428. The cubic root of 21082032 is about 276.2511890915.

The spelling of 21082032 in words is "twenty-one million, eighty-two thousand, thirty-two".