264210138 has 24 divisors (see below), whose sum is σ = 573139476. Its totient is φ = 87964800.

The previous prime is 264210137. The next prime is 264210139. The reversal of 264210138 is 831012462.

264210138 is a `hidden beast` number, since 2 + 642 + 1 + 0 + 13 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (264210137) and next prime (264210139).

It can be written as a sum of positive squares in 2 ways, for example, as 255584169 + 8625969 = 15987^2 + 2937^2 .

It is not an unprimeable number, because it can be changed into a prime (264210137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7528 + ... + 24188.

Almost surely, 2^264210138 is an apocalyptic number.

264210138 is an abundant number, since it is smaller than the sum of its proper divisors (308929338).

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

264210138 is a wasteful number, since it uses less digits than its factorization.

264210138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17550 (or 17547 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 264210138 is about 16254.5420729100. The cubic root of 264210138 is about 641.6770291537.

The spelling of 264210138 in words is "two hundred sixty-four million, two hundred ten thousand, one hundred thirty-eight".