464342640 has 40 divisors (see below), whose sum is σ = 1439462928. Its totient is φ = 123824640.

The previous prime is 464342623. The next prime is 464342677. The reversal of 464342640 is 46243464.

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

It is a super-2 number, since 2×464342640² = 431228174644339200, which contains 22 as substring.

It is a congruent number.

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, 967141 + ... + 967620.

Almost surely, 2^464342640 is an apocalyptic number.

464342640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

464342640 is an abundant number, since it is smaller than the sum of its proper divisors (975120288).

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

464342640 is a wasteful number, since it uses less digits than its factorization.

464342640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934777 (or 1934771 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

The square root of 464342640 is about 21548.6110921331. The cubic root of 464342640 is about 774.3658440500.

The spelling of 464342640 in words is "four hundred sixty-four million, three hundred forty-two thousand, six hundred forty".