252806378 has 8 divisors (see below), whose sum is σ = 413683200. Its totient is φ = 114911980.

The previous prime is 252806377. The next prime is 252806401. The reversal of 252806378 is 873608252.

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

It is a super-2 number, since 2×252806378² = 127822129514957768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252806377) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5745578 + ... + 5745621.

It is an arithmetic number, because the mean of its divisors is an integer number (51710400).

Almost surely, 2^252806378 is an apocalyptic number.

252806378 is a deficient number, since it is larger than the sum of its proper divisors (160876822).

252806378 is a wasteful number, since it uses less digits than its factorization.

252806378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11491212.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 252806378 is about 15899.8861002210. The cubic root of 252806378 is about 632.3089690611.

The spelling of 252806378 in words is "two hundred fifty-two million, eight hundred six thousand, three hundred seventy-eight".