462078640 has 20 divisors (see below), whose sum is σ = 1074333024. Its totient is φ = 184831424.

The previous prime is 462078637. The next prime is 462078677. The reversal of 462078640 is 46870264.

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 462078640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2887912 + ... + 2888071.

Almost surely, 2^462078640 is an apocalyptic number.

462078640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

462078640 is an abundant number, since it is smaller than the sum of its proper divisors (612254384).

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

462078640 is a wasteful number, since it uses less digits than its factorization.

462078640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775996 (or 5775990 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 462078640 is about 21496.0145143233. The cubic root of 462078640 is about 773.1052653525.

The spelling of 462078640 in words is "four hundred sixty-two million, seventy-eight thousand, six hundred forty".