252632478 has 64 divisors (see below), whose sum is σ = 620656128. Its totient is φ = 66908160.

The previous prime is 252632477. The next prime is 252632491. The reversal of 252632478 is 874236252.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252632477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45198 + ... + 50478.

It is an arithmetic number, because the mean of its divisors is an integer number (9697752).

Almost surely, 2^252632478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252632478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310328064).

252632478 is an abundant number, since it is smaller than the sum of its proper divisors (368023650).

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

252632478 is a wasteful number, since it uses less digits than its factorization.

252632478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5377.

The product of its digits is 161280, while the sum is 39.

The square root of 252632478 is about 15894.4165668325. The cubic root of 252632478 is about 632.1639519497.

The spelling of 252632478 in words is "two hundred fifty-two million, six hundred thirty-two thousand, four hundred seventy-eight".