264208820 has 24 divisors (see below), whose sum is σ = 578962944. Its totient is φ = 101088416.

The previous prime is 264208817. The next prime is 264208853. The reversal of 264208820 is 28802462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286724 + ... + 287643.

It is an arithmetic number, because the mean of its divisors is an integer number (24123456).

Almost surely, 2^264208820 is an apocalyptic number.

264208820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264208820 is an abundant number, since it is smaller than the sum of its proper divisors (314754124).

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

264208820 is a wasteful number, since it uses less digits than its factorization.

264208820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574399 (or 574397 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 264208820 is about 16254.5015303454. The cubic root of 264208820 is about 641.6759621599.

The spelling of 264208820 in words is "two hundred sixty-four million, two hundred eight thousand, eight hundred twenty".