20472372 has 24 divisors (see below), whose sum is σ = 53076800. Its totient is φ = 6824088.

The previous prime is 20472349. The next prime is 20472377. The reversal of 20472372 is 27327402.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472377) 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, 94672 + ... + 94887.

Almost surely, 2^20472372 is an apocalyptic number.

It is an amenable number.

20472372 is an abundant number, since it is smaller than the sum of its proper divisors (32604428).

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

20472372 is a wasteful number, since it uses less digits than its factorization.

20472372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189572 (or 189564 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20472372 is about 4524.6405382085. The cubic root of 20472372 is about 273.5621792905.

Adding to 20472372 its reverse (27327402), we get a palindrome (47799774).

The spelling of 20472372 in words is "twenty million, four hundred seventy-two thousand, three hundred seventy-two".