252510730 has 16 divisors (see below), whose sum is σ = 455874120. Its totient is φ = 100703232.

The previous prime is 252510701. The next prime is 252510733. The reversal of 252510730 is 37015252.

It can be written as a sum of positive squares in 4 ways, for example, as 235346281 + 17164449 = 15341^2 + 4143^2 .

It is a junction number, because it is equal to n+sod(n) for n = 252510695 and 252510704.

It is not an unprimeable number, because it can be changed into a prime (252510733) 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, 34095 + ... + 40834.

Almost surely, 2^252510730 is an apocalyptic number.

252510730 is a deficient number, since it is larger than the sum of its proper divisors (203363390).

252510730 is a wasteful number, since it uses less digits than its factorization.

252510730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75273.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 252510730 is about 15890.5862069340. The cubic root of 252510730 is about 632.0623853521.

Adding to 252510730 its reverse (37015252), we get a palindrome (289525982).

The spelling of 252510730 in words is "two hundred fifty-two million, five hundred ten thousand, seven hundred thirty".