475418640 has 40 divisors (see below), whose sum is σ = 1473798528. Its totient is φ = 126778240.

The previous prime is 475418599. The next prime is 475418683. The reversal of 475418640 is 46814574.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990216 + ... + 990695.

Almost surely, 2^475418640 is an apocalyptic number.

475418640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

475418640 is an abundant number, since it is smaller than the sum of its proper divisors (998379888).

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

475418640 is a wasteful number, since it uses less digits than its factorization.

475418640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980927 (or 1980921 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 475418640 is about 21804.0968627458. The cubic root of 475418640 is about 780.4745304481.

The spelling of 475418640 in words is "four hundred seventy-five million, four hundred eighteen thousand, six hundred forty".