474394640 has 20 divisors (see below), whose sum is σ = 1102967724. Its totient is φ = 189757824.

The previous prime is 474394637. The next prime is 474394703. The reversal of 474394640 is 46493474.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 115519504 + 358875136 = 10748^2 + 18944^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2964887 + ... + 2965046.

Almost surely, 2^474394640 is an apocalyptic number.

474394640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

474394640 is an abundant number, since it is smaller than the sum of its proper divisors (628573084).

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

474394640 is a wasteful number, since it uses less digits than its factorization.

474394640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929946 (or 5929940 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 474394640 is about 21780.6023791813. The cubic root of 474394640 is about 779.9137752594.

The spelling of 474394640 in words is "four hundred seventy-four million, three hundred ninety-four thousand, six hundred forty".