462640638 has 16 divisors (see below), whose sum is σ = 947849616. Its totient is φ = 150452160.

The previous prime is 462640613. The next prime is 462640649. The reversal of 462640638 is 836046264.

It is a junction number, because it is equal to n+sod(n) for n = 462640596 and 462640605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940081 + ... + 940572.

It is an arithmetic number, because the mean of its divisors is an integer number (59240601).

Almost surely, 2^462640638 is an apocalyptic number.

462640638 is an abundant number, since it is smaller than the sum of its proper divisors (485208978).

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

462640638 is a wasteful number, since it uses less digits than its factorization.

462640638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880699.

The product of its (nonzero) digits is 165888, while the sum is 39.

The square root of 462640638 is about 21509.0826861584. The cubic root of 462640638 is about 773.4185652608.

The spelling of 462640638 in words is "four hundred sixty-two million, six hundred forty thousand, six hundred thirty-eight".