20312032 has 48 divisors (see below), whose sum is σ = 43479072. Its totient is φ = 9285120.

The previous prime is 20312021. The next prime is 20312053. The reversal of 20312032 is 23021302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 65157 + ... + 65467.

It is an arithmetic number, because the mean of its divisors is an integer number (905814).

Almost surely, 2^20312032 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 20312032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21739536).

20312032 is an abundant number, since it is smaller than the sum of its proper divisors (23167040).

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

20312032 is a wasteful number, since it uses less digits than its factorization.

20312032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20312032 is about 4506.8871740926. The cubic root of 20312032 is about 272.8461252748.

Adding to 20312032 its reverse (23021302), we get a palindrome (43333334).

The spelling of 20312032 in words is "twenty million, three hundred twelve thousand, thirty-two".