264307281 has 16 divisors (see below), whose sum is σ = 404329344. Its totient is φ = 150441984.

The previous prime is 264307213. The next prime is 264307297. The reversal of 264307281 is 182703462.

It is not a de Polignac number, because 264307281 - 2¹⁰ = 264306257 is a prime.

It is a super-2 number, since 2×264307281² = 139716677579225922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (264307181) 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 15 ways as a sum of consecutive naturals, for example, 19090 + ... + 29883.

It is an arithmetic number, because the mean of its divisors is an integer number (25270584).

Almost surely, 2^264307281 is an apocalyptic number.

264307281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

264307281 is a deficient number, since it is larger than the sum of its proper divisors (140022063).

264307281 is a wasteful number, since it uses less digits than its factorization.

264307281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49240.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 264307281 is about 16257.5299784438. The cubic root of 264307281 is about 641.7556620102.

The spelling of 264307281 in words is "two hundred sixty-four million, three hundred seven thousand, two hundred eighty-one".