1252238868 has 36 divisors (see below), whose sum is σ = 3179225140. Its totient is φ = 415587456.

The previous prime is 1252238843. The next prime is 1252238941. The reversal of 1252238868 is 8688322521.

1252238868 is a `hidden beast` number, since 12 + 522 + 38 + 86 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1205617284 + 46621584 = 34722^2 + 6828^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67705 + ... + 84192.

Almost surely, 2^1252238868 is an apocalyptic number.

1252238868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1252238868 is an abundant number, since it is smaller than the sum of its proper divisors (1926986272).

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

1252238868 is a wasteful number, since it uses less digits than its factorization.

1252238868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152136 (or 152131 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 1252238868 is about 35386.9872693339. The cubic root of 1252238868 is about 1077.8600940785.

The spelling of 1252238868 in words is "one billion, two hundred fifty-two million, two hundred thirty-eight thousand, eight hundred sixty-eight".