264581632 has 40 divisors (see below), whose sum is σ = 604175616. Its totient is φ = 113390592.

The previous prime is 264581579. The next prime is 264581633. The reversal of 264581632 is 236185462.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 264581591 and 264581600.

It is not an unprimeable number, because it can be changed into a prime (264581633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33328 + ... + 40495.

Almost surely, 2^264581632 is an apocalyptic number.

It is an amenable number.

264581632 is an abundant number, since it is smaller than the sum of its proper divisors (339593984).

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

264581632 is an frugal number, since it uses more digits than its factorization.

264581632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73848 (or 73832 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 264581632 is about 16265.9654493670. The cubic root of 264581632 is about 641.9776327194.

The spelling of 264581632 in words is "two hundred sixty-four million, five hundred eighty-one thousand, six hundred thirty-two".