460438640 has 20 divisors (see below), whose sum is σ = 1070520024. Its totient is φ = 184175424.

The previous prime is 460438639. The next prime is 460438661. The reversal of 460438640 is 46834064.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 460438640.

It is a congruent number.

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, 2877662 + ... + 2877821.

Almost surely, 2^460438640 is an apocalyptic number.

460438640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

460438640 is an abundant number, since it is smaller than the sum of its proper divisors (610081384).

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

460438640 is a wasteful number, since it uses less digits than its factorization.

460438640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755496 (or 5755490 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 460438640 is about 21457.8340006628. The cubic root of 460438640 is about 772.1895513861.

The spelling of 460438640 in words is "four hundred sixty million, four hundred thirty-eight thousand, six hundred forty".