472657428 has 72 divisors (see below), whose sum is σ = 1243831680. Its totient is φ = 151152960.

The previous prime is 472657411. The next prime is 472657447. The reversal of 472657428 is 824756274.

It is a happy number.

472657428 is a `hidden beast` number, since 4 + 72 + 6 + 574 + 2 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172993 + ... + 175703.

It is an arithmetic number, because the mean of its divisors is an integer number (17275440).

Almost surely, 2^472657428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 472657428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621915840).

472657428 is an abundant number, since it is smaller than the sum of its proper divisors (771174252).

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

472657428 is a wasteful number, since it uses less digits than its factorization.

472657428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917 (or 2912 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 472657428 is about 21740.6860057359. The cubic root of 472657428 is about 778.9606076790.

The spelling of 472657428 in words is "four hundred seventy-two million, six hundred fifty-seven thousand, four hundred twenty-eight".