471908640 has 96 divisors (see below), whose sum is σ = 1698883200. Its totient is φ = 107864064.

The previous prime is 471908639. The next prime is 471908659. The reversal of 471908640 is 46809174.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 66865 + ... + 73584.

It is an arithmetic number, because the mean of its divisors is an integer number (17696700).

Almost surely, 2^471908640 is an apocalyptic number.

471908640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

471908640 is an abundant number, since it is smaller than the sum of its proper divisors (1226974560).

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

471908640 is a wasteful number, since it uses less digits than its factorization.

471908640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140474 (or 140466 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 471908640 is about 21723.4582882192. The cubic root of 471908640 is about 778.5490448834.

The spelling of 471908640 in words is "four hundred seventy-one million, nine hundred eight thousand, six hundred forty".