252405786 has 64 divisors (see below), whose sum is σ = 537153408. Its totient is φ = 78962688.

The previous prime is 252405779. The next prime is 252405793. The reversal of 252405786 is 687504252.

It is an interprime number because it is at equal distance from previous prime (252405779) and next prime (252405793).

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 31 ways as a sum of consecutive naturals, for example, 1307706 + ... + 1307898.

It is an arithmetic number, because the mean of its divisors is an integer number (8393022).

Almost surely, 2^252405786 is an apocalyptic number.

252405786 is an abundant number, since it is smaller than the sum of its proper divisors (284747622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252405786 is a wasteful number, since it uses less digits than its factorization.

252405786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 252405786 is about 15887.2837829504. The cubic root of 252405786 is about 631.9748110588.

The spelling of 252405786 in words is "two hundred fifty-two million, four hundred five thousand, seven hundred eighty-six".