264681320 has 32 divisors (see below), whose sum is σ = 598573800. Its totient is φ = 105331968.

The previous prime is 264681301. The next prime is 264681323. The reversal of 264681320 is 23186462.

It can be written as a sum of positive squares in 4 ways, for example, as 254657764 + 10023556 = 15958^2 + 3166^2 .

It is not an unprimeable number, because it can be changed into a prime (264681323) by changing a digit.

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, 8915 + ... + 24674.

Almost surely, 2^264681320 is an apocalyptic number.

264681320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264681320 is an abundant number, since it is smaller than the sum of its proper divisors (333892480).

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

264681320 is a wasteful number, since it uses less digits than its factorization.

264681320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33797 (or 33793 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 264681320 is about 16269.0294732046. The cubic root of 264681320 is about 642.0582498429.

The spelling of 264681320 in words is "two hundred sixty-four million, six hundred eighty-one thousand, three hundred twenty".