20023432 has 64 divisors (see below), whose sum is σ = 46085760. Its totient is φ = 8025600.

The previous prime is 20023429. The next prime is 20023441. The reversal of 20023432 is 23432002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25932 + ... + 26692.

It is an arithmetic number, because the mean of its divisors is an integer number (720090).

Almost surely, 2^20023432 is an apocalyptic number.

20023432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20023432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23042880).

20023432 is an abundant number, since it is smaller than the sum of its proper divisors (26062328).

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

20023432 is a wasteful number, since it uses less digits than its factorization.

20023432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20023432 is about 4474.7549653584. The cubic root of 20023432 is about 271.5477273431.

Adding to 20023432 its reverse (23432002), we get a palindrome (43455434).

It can be divided in two parts, 200 and 23432, that added together give a palindrome (23632).

The spelling of 20023432 in words is "twenty million, twenty-three thousand, four hundred thirty-two".