252587478 has 32 divisors (see below), whose sum is σ = 593494272. Its totient is φ = 70653600.

The previous prime is 252587471. The next prime is 252587497. The reversal of 252587478 is 874785252.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252587471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146338 + ... + 148053.

It is an arithmetic number, because the mean of its divisors is an integer number (18546696).

Almost surely, 2^252587478 is an apocalyptic number.

252587478 is an abundant number, since it is smaller than the sum of its proper divisors (340906794).

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

252587478 is a wasteful number, since it uses less digits than its factorization.

252587478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294420.

The product of its digits is 1254400, while the sum is 48.

The square root of 252587478 is about 15893.0009123513. Note that the first 3 decimals coincide. The cubic root of 252587478 is about 632.1264151198.

The spelling of 252587478 in words is "two hundred fifty-two million, five hundred eighty-seven thousand, four hundred seventy-eight".