252120730 has 16 divisors (see below), whose sum is σ = 454956264. Its totient is φ = 100595200.

The previous prime is 252120683. The next prime is 252120731. The reversal of 252120730 is 37021252.

252120730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 248283049 + 3837681 = 15757^2 + 1959^2 .

It is not an unprimeable number, because it can be changed into a prime (252120731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27427 + ... + 35446.

Almost surely, 2^252120730 is an apocalyptic number.

252120730 is a deficient number, since it is larger than the sum of its proper divisors (202835534).

252120730 is a wasteful number, since it uses less digits than its factorization.

252120730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63281.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 252120730 is about 15878.3100486166. The cubic root of 252120730 is about 631.7368132507.

Adding to 252120730 its reverse (37021252), we get a palindrome (289141982).

The spelling of 252120730 in words is "two hundred fifty-two million, one hundred twenty thousand, seven hundred thirty".