252783278 has 12 divisors (see below), whose sum is σ = 416779440. Its totient is φ = 114901380.

The previous prime is 252783259. The next prime is 252783281. The reversal of 252783278 is 872387252.

252783278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 522038 + ... + 522521.

It is an arithmetic number, because the mean of its divisors is an integer number (34731620).

Almost surely, 2^252783278 is an apocalyptic number.

252783278 is a deficient number, since it is larger than the sum of its proper divisors (163996162).

252783278 is a wasteful number, since it uses less digits than its factorization.

252783278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044583 (or 1044572 counting only the distinct ones).

The product of its digits is 376320, while the sum is 44.

The square root of 252783278 is about 15899.1596633281. The cubic root of 252783278 is about 632.2897095495.

The spelling of 252783278 in words is "two hundred fifty-two million, seven hundred eighty-three thousand, two hundred seventy-eight".