20231632 has 20 divisors (see below), whose sum is σ = 41505156. Its totient is φ = 9520640.

The previous prime is 20231597. The next prime is 20231639. The reversal of 20231632 is 23613202.

It can be written as a sum of positive squares in 2 ways, for example, as 12702096 + 7529536 = 3564^2 + 2744^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231639) 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, 36919 + ... + 37462.

Almost surely, 2^20231632 is an apocalyptic number.

It is an amenable number.

20231632 is an abundant number, since it is smaller than the sum of its proper divisors (21273524).

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

20231632 is a wasteful number, since it uses less digits than its factorization.

20231632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74406 (or 74400 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20231632 is about 4497.9586480980. The cubic root of 20231632 is about 272.4856519674.

Adding to 20231632 its reverse (23613202), we get a palindrome (43844834).

It can be divided in two parts, 2023 and 1632, that added together give a triangular number (3655 = T₈₅).

The spelling of 20231632 in words is "twenty million, two hundred thirty-one thousand, six hundred thirty-two".