465521640 has 32 divisors (see below), whose sum is σ = 1396565280. Its totient is φ = 124139072.

The previous prime is 465521629. The next prime is 465521681. The reversal of 465521640 is 46125564.

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, 1939554 + ... + 1939793.

It is an arithmetic number, because the mean of its divisors is an integer number (43642665).

Almost surely, 2^465521640 is an apocalyptic number.

465521640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

465521640 is an abundant number, since it is smaller than the sum of its proper divisors (931043640).

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

465521640 is a wasteful number, since it uses less digits than its factorization.

465521640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3879361 (or 3879357 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 465521640 is about 21575.9505004994. The cubic root of 465521640 is about 775.0206806830.

The spelling of 465521640 in words is "four hundred sixty-five million, five hundred twenty-one thousand, six hundred forty".