264564020 has 24 divisors (see below), whose sum is σ = 634953984. Its totient is φ = 90707616.

The previous prime is 264564019. The next prime is 264564043. The reversal of 264564020 is 20465462.

264564020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 944732 + ... + 945011.

It is an arithmetic number, because the mean of its divisors is an integer number (26456416).

Almost surely, 2^264564020 is an apocalyptic number.

264564020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264564020 is an abundant number, since it is smaller than the sum of its proper divisors (370389964).

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

264564020 is a wasteful number, since it uses less digits than its factorization.

264564020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889759 (or 1889757 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 264564020 is about 16265.4240645610. The cubic root of 264564020 is about 641.9633878896.

The spelling of 264564020 in words is "two hundred sixty-four million, five hundred sixty-four thousand, twenty".