472540644 has 27 divisors (see below), whose sum is σ = 1194807523. Its totient is φ = 157470072.

The previous prime is 472540637. The next prime is 472540669. The reversal of 472540644 is 446045274.

The square root of 472540644 is 21738.

It is a perfect power (a square), and thus also a powerful number.

472540644 is a `hidden beast` number, since 4 + 7 + 2 + 5 + 4 + 0 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 472540599 and 472540608.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 128617 + ... + 132239.

Almost surely, 2^472540644 is an apocalyptic number.

472540644 is the 21738-th square number.

It is an amenable number.

472540644 is an abundant number, since it is smaller than the sum of its proper divisors (722266879).

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

472540644 is an equidigital number, since it uses as much as digits as its factorization.

472540644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7256 (or 3628 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The cubic root of 472540644 is about 778.8964473072.

Multiplying 472540644 by its sum of digits (36), we get a square (17011463184 = 130428²).

472540644 divided by its sum of digits (36) gives a square (13126129 = 3623²).

It can be divided in two parts, 4725 and 40644, that added together give a square (45369 = 213²).

The spelling of 472540644 in words is "four hundred seventy-two million, five hundred forty thousand, six hundred forty-four".