252126388 has 12 divisors (see below), whose sum is σ = 467175492. Its totient is φ = 118647680.

The previous prime is 252126349. The next prime is 252126449. The reversal of 252126388 is 883621252.

It can be written as a sum of positive squares in 2 ways, for example, as 234334864 + 17791524 = 15308^2 + 4218^2 .

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 3 ways as a sum of consecutive naturals, for example, 1853803 + ... + 1853938.

It is an arithmetic number, because the mean of its divisors is an integer number (38931291).

Almost surely, 2^252126388 is an apocalyptic number.

It is an amenable number.

252126388 is a deficient number, since it is larger than the sum of its proper divisors (215049104).

252126388 is a wasteful number, since it uses less digits than its factorization.

252126388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707762 (or 3707760 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 252126388 is about 15878.4882151923. The cubic root of 252126388 is about 631.7415389498.

The spelling of 252126388 in words is "two hundred fifty-two million, one hundred twenty-six thousand, three hundred eighty-eight".