252684738 has 64 divisors (see below), whose sum is σ = 574333440. Its totient is φ = 82328400.

The previous prime is 252684683. The next prime is 252684767. The reversal of 252684738 is 837486252.

252684738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 252684693 and 252684702.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 763233 + ... + 763563.

It is an arithmetic number, because the mean of its divisors is an integer number (8973960).

Almost surely, 2^252684738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252684738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287166720).

252684738 is an abundant number, since it is smaller than the sum of its proper divisors (321648702).

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

252684738 is a wasteful number, since it uses less digits than its factorization.

252684738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 614 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 252684738 is about 15896.0604553455. The cubic root of 252684738 is about 632.2075391277.

The spelling of 252684738 in words is "two hundred fifty-two million, six hundred eighty-four thousand, seven hundred thirty-eight".