21092032 has 56 divisors (see below), whose sum is σ = 45701712. Its totient is φ = 9600000.

The previous prime is 21092017. The next prime is 21092047. The reversal of 21092032 is 23029012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21092017) and next prime (21092047).

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, 83907 + ... + 84157.

It is an arithmetic number, because the mean of its divisors is an integer number (816102).

Almost surely, 2^21092032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21092032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22850856).

21092032 is an abundant number, since it is smaller than the sum of its proper divisors (24609680).

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

21092032 is a wasteful number, since it uses less digits than its factorization.

21092032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 21092032 is about 4592.6062317599. The cubic root of 21092032 is about 276.2948609605.

The spelling of 21092032 in words is "twenty-one million, ninety-two thousand, thirty-two".