252631634 has 8 divisors (see below), whose sum is σ = 389189388. Its totient is φ = 122901840.

The previous prime is 252631633. The next prime is 252631637. The reversal of 252631634 is 436136252.

It can be written as a sum of positive squares in 2 ways, for example, as 208369225 + 44262409 = 14435^2 + 6653^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 252631634.

It is not an unprimeable number, because it can be changed into a prime (252631633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706897 + ... + 1707044.

Almost surely, 2^252631634 is an apocalyptic number.

252631634 is a deficient number, since it is larger than the sum of its proper divisors (136557754).

252631634 is a wasteful number, since it uses less digits than its factorization.

252631634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413980.

The product of its digits is 25920, while the sum is 32.

The square root of 252631634 is about 15894.3900166065. The cubic root of 252631634 is about 632.1632479666.

Adding to 252631634 its reverse (436136252), we get a palindrome (688767886).

The spelling of 252631634 in words is "two hundred fifty-two million, six hundred thirty-one thousand, six hundred thirty-four".