264421560 has 64 divisors (see below), whose sum is σ = 854290080. Its totient is φ = 65088000.

The previous prime is 264421559. The next prime is 264421561. The reversal of 264421560 is 65124462.

It is an interprime number because it is at equal distance from previous prime (264421559) and next prime (264421561).

It is a super-2 number, since 2×264421560² = 139837522785667200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264421561) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 83191 + ... + 86310.

Almost surely, 2^264421560 is an apocalyptic number.

264421560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264421560 is an abundant number, since it is smaller than the sum of its proper divisors (589868520).

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

264421560 is a wasteful number, since it uses less digits than its factorization.

264421560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169528 (or 169524 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 264421560 is about 16261.0442469111. The cubic root of 264421560 is about 641.8481410213.

The spelling of 264421560 in words is "two hundred sixty-four million, four hundred twenty-one thousand, five hundred sixty".