32172452020 has 24 divisors (see below), whose sum is σ = 67615027200. Its totient is φ = 12858908832.

The previous prime is 32172451981. The next prime is 32172452027. The reversal of 32172452020 is 2025427123.

It is a self number, because there is not a number n which added to its sum of digits gives 32172452020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32172452027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603280 + ... + 654439.

It is an arithmetic number, because the mean of its divisors is an integer number (2817292800).

Almost surely, 2^32172452020 is an apocalyptic number.

It is an amenable number.

32172452020 is an abundant number, since it is smaller than the sum of its proper divisors (35442575180).

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

32172452020 is a wasteful number, since it uses less digits than its factorization.

32172452020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259007 (or 1259005 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 32172452020 its reverse (2025427123), we get a palindrome (34197879143).

The spelling of 32172452020 in words is "thirty-two billion, one hundred seventy-two million, four hundred fifty-two thousand, twenty".