264222387 has 48 divisors (see below), whose sum is σ = 450777600. Its totient is φ = 147026880.

The previous prime is 264222377. The next prime is 264222389. The reversal of 264222387 is 783222462.

It is a happy number.

264222387 is a `hidden beast` number, since 2 + 642 + 2 + 2 + 3 + 8 + 7 = 666.

It is not a de Polignac number, because 264222387 - 2⁸ = 264222131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (264222389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 307164 + ... + 308022.

It is an arithmetic number, because the mean of its divisors is an integer number (9391200).

Almost surely, 2^264222387 is an apocalyptic number.

264222387 is a deficient number, since it is larger than the sum of its proper divisors (186555213).

264222387 is a wasteful number, since it uses less digits than its factorization.

264222387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1125 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 264222387 is about 16254.9188555342. The cubic root of 264222387 is about 641.6869452260.

The spelling of 264222387 in words is "two hundred sixty-four million, two hundred twenty-two thousand, three hundred eighty-seven".