252146646 has 24 divisors (see below), whose sum is σ = 546928200. Its totient is φ = 83954976.

The previous prime is 252146627. The next prime is 252146647. The reversal of 252146646 is 646641252.

252146646 is a `hidden beast` number, since 2 + 5 + 2 + 1 + 4 + 6 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 252146646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252146647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9805 + ... + 24503.

It is an arithmetic number, because the mean of its divisors is an integer number (22788675).

Almost surely, 2^252146646 is an apocalyptic number.

252146646 is an abundant number, since it is smaller than the sum of its proper divisors (294781554).

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

252146646 is a wasteful number, since it uses less digits than its factorization.

252146646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15660 (or 15657 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 252146646 is about 15879.1261094558. The cubic root of 252146646 is about 631.7584583441.

Adding to 252146646 its reverse (646641252), we get a palindrome (898787898).

The spelling of 252146646 in words is "two hundred fifty-two million, one hundred forty-six thousand, six hundred forty-six".