252756386 has 8 divisors (see below), whose sum is σ = 379360044. Its totient is φ = 126303040.

The previous prime is 252756359. The next prime is 252756397. The reversal of 252756386 is 683657252.

It can be written as a sum of positive squares in 2 ways, for example, as 251825161 + 931225 = 15869^2 + 965^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×252756386³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33275 + ... + 40158.

Almost surely, 2^252756386 is an apocalyptic number.

252756386 is a deficient number, since it is larger than the sum of its proper divisors (126603658).

252756386 is a wasteful number, since it uses less digits than its factorization.

252756386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75156.

The product of its digits is 604800, while the sum is 44.

The square root of 252756386 is about 15898.3139357606. The cubic root of 252756386 is about 632.2672869985.

The spelling of 252756386 in words is "two hundred fifty-two million, seven hundred fifty-six thousand, three hundred eighty-six".