252188378 has 32 divisors (see below), whose sum is σ = 419392512. Its totient is φ = 112996800.

The previous prime is 252188369. The next prime is 252188381. The reversal of 252188378 is 873881252.

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 15 ways as a sum of consecutive naturals, for example, 212948 + ... + 214128.

It is an arithmetic number, because the mean of its divisors is an integer number (13106016).

Almost surely, 2^252188378 is an apocalyptic number.

252188378 is a deficient number, since it is larger than the sum of its proper divisors (167204134).

252188378 is a wasteful number, since it uses less digits than its factorization.

252188378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430.

The product of its digits is 215040, while the sum is 44.

The square root of 252188378 is about 15880.4401072514. The cubic root of 252188378 is about 631.7933098747.

The spelling of 252188378 in words is "two hundred fifty-two million, one hundred eighty-eight thousand, three hundred seventy-eight".