20133232 has 40 divisors (see below), whose sum is σ = 45262976. Its totient is φ = 8496576.

The previous prime is 20133199. The next prime is 20133247. The reversal of 20133232 is 23233102.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 6163 + ... + 8845.

Almost surely, 2^20133232 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 20133232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22631488).

20133232 is an abundant number, since it is smaller than the sum of its proper divisors (25129744).

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

20133232 is a wasteful number, since it uses less digits than its factorization.

20133232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20133232 is about 4487.0070202753. The cubic root of 20133232 is about 272.0431736543.

Adding to 20133232 its reverse (23233102), we get a palindrome (43366334).

It can be divided in two parts, 201 and 33232, that added together give a palindrome (33433).

The spelling of 20133232 in words is "twenty million, one hundred thirty-three thousand, two hundred thirty-two".