21412032 has 28 divisors (see below), whose sum is σ = 56653176. Its totient is φ = 7137280.

The previous prime is 21412021. The next prime is 21412033. The reversal of 21412032 is 23021412.

It is a super-2 number, since 2×21412032² = 916950228738048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21412033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55569 + ... + 55952.

Almost surely, 2^21412032 is an apocalyptic number.

It is an amenable number.

21412032 is an abundant number, since it is smaller than the sum of its proper divisors (35241144).

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

21412032 is a wasteful number, since it uses less digits than its factorization.

21412032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111536 (or 111526 counting only the distinct ones).

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

The square root of 21412032 is about 4627.3136915493. The cubic root of 21412032 is about 277.6851325293.

Adding to 21412032 its reverse (23021412), we get a palindrome (44433444).

It can be divided in two parts, 214 and 12032, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 21412032 in words is "twenty-one million, four hundred twelve thousand, thirty-two".