252623786 has 4 divisors (see below), whose sum is σ = 378935682. Its totient is φ = 126311892.

The previous prime is 252623783. The next prime is 252623801. The reversal of 252623786 is 687326252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 249798025 + 2825761 = 15805^2 + 1681^2 .

It is not an unprimeable number, because it can be changed into a prime (252623783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63155945 + ... + 63155948.

Almost surely, 2^252623786 is an apocalyptic number.

252623786 is a deficient number, since it is larger than the sum of its proper divisors (126311896).

252623786 is a wasteful number, since it uses less digits than its factorization.

252623786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126311895.

The product of its digits is 241920, while the sum is 41.

The square root of 252623786 is about 15894.1431351300. The cubic root of 252623786 is about 632.1567018498.

The spelling of 252623786 in words is "two hundred fifty-two million, six hundred twenty-three thousand, seven hundred eighty-six".