252408278 has 8 divisors (see below), whose sum is σ = 381120240. Its totient is φ = 125368200.

The previous prime is 252408269. The next prime is 252408319. The reversal of 252408278 is 872804252.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417593 + ... + 418196.

It is an arithmetic number, because the mean of its divisors is an integer number (47640030).

Almost surely, 2^252408278 is an apocalyptic number.

252408278 is a deficient number, since it is larger than the sum of its proper divisors (128711962).

252408278 is a wasteful number, since it uses less digits than its factorization.

252408278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835942.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 252408278 is about 15887.3622102601. The cubic root of 252408278 is about 631.9768908791.

The spelling of 252408278 in words is "two hundred fifty-two million, four hundred eight thousand, two hundred seventy-eight".