472545640 has 64 divisors (see below), whose sum is σ = 1233302400. Its totient is φ = 159591168.

The previous prime is 472545631. The next prime is 472545701. The reversal of 472545640 is 46545274.

It is a self number, because there is not a number n which added to its sum of digits gives 472545640.

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, 6166 + ... + 31354.

It is an arithmetic number, because the mean of its divisors is an integer number (19270350).

Almost surely, 2^472545640 is an apocalyptic number.

472545640 is a gapful number since it is divisible by the number (40) 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 472545640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (616651200).

472545640 is an abundant number, since it is smaller than the sum of its proper divisors (760756760).

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

472545640 is a wasteful number, since it uses less digits than its factorization.

472545640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25274 (or 25270 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 37.

The square root of 472545640 is about 21738.1149136718. The cubic root of 472545640 is about 778.8991922936.

The spelling of 472545640 in words is "four hundred seventy-two million, five hundred forty-five thousand, six hundred forty".