472551640 has 64 divisors (see below), whose sum is σ = 1171272960. Its totient is φ = 170152320.

The previous prime is 472551637. The next prime is 472551683. The reversal of 472551640 is 46155274.

It is a junction number, because it is equal to n+sod(n) for n = 472551596 and 472551605.

It is a congruent number.

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, 40107 + ... + 50533.

It is an arithmetic number, because the mean of its divisors is an integer number (18301140).

Almost surely, 2^472551640 is an apocalyptic number.

472551640 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 472551640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585636480).

472551640 is an abundant number, since it is smaller than the sum of its proper divisors (698721320).

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

472551640 is a wasteful number, since it uses less digits than its factorization.

472551640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10552 (or 10548 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 472551640 is about 21738.2529196806. The cubic root of 472551640 is about 778.9024888890.

It can be divided in two parts, 4725 and 51640, that added together give a palindrome (56365).

The spelling of 472551640 in words is "four hundred seventy-two million, five hundred fifty-one thousand, six hundred forty".