252322730 has 32 divisors (see below), whose sum is σ = 496247040. Its totient is φ = 91609920.

The previous prime is 252322729. The next prime is 252322751. The reversal of 252322730 is 37223252.

It is a self number, because there is not a number n which added to its sum of digits gives 252322730.

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 15 ways as a sum of consecutive naturals, for example, 89807 + ... + 92573.

It is an arithmetic number, because the mean of its divisors is an integer number (15507720).

Almost surely, 2^252322730 is an apocalyptic number.

252322730 is a deficient number, since it is larger than the sum of its proper divisors (243924310).

252322730 is a wasteful number, since it uses less digits than its factorization.

252322730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 252322730 is about 15884.6696534741. The cubic root of 252322730 is about 631.9054847845.

Adding to 252322730 its reverse (37223252), we get a palindrome (289545982).

The spelling of 252322730 in words is "two hundred fifty-two million, three hundred twenty-two thousand, seven hundred thirty".