21132024 has 32 divisors (see below), whose sum is σ = 53136000. Its totient is φ = 7003232.

The previous prime is 21132011. The next prime is 21132061. The reversal of 21132024 is 42023112.

It is a junction number, because it is equal to n+sod(n) for n = 21131994 and 21132012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837 + ... + 6755.

It is an arithmetic number, because the mean of its divisors is an integer number (1660500).

Almost surely, 2^21132024 is an apocalyptic number.

21132024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21132024 is an abundant number, since it is smaller than the sum of its proper divisors (32003976).

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

21132024 is a wasteful number, since it uses less digits than its factorization.

21132024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5107 (or 5103 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21132024 is about 4596.9581246733. The cubic root of 21132024 is about 276.4693756433.

Adding to 21132024 its reverse (42023112), we get a palindrome (63155136).

The spelling of 21132024 in words is "twenty-one million, one hundred thirty-two thousand, twenty-four".