252220420 has 24 divisors (see below), whose sum is σ = 531203904. Its totient is φ = 100594656.

The previous prime is 252220417. The next prime is 252220447. The reversal of 252220420 is 24022252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11232 + ... + 25111.

It is an arithmetic number, because the mean of its divisors is an integer number (22133496).

Almost surely, 2^252220420 is an apocalyptic number.

252220420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252220420 is an abundant number, since it is smaller than the sum of its proper divisors (278983484).

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

252220420 is a wasteful number, since it uses less digits than its factorization.

252220420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36699 (or 36697 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 252220420 is about 15881.4489263417. The cubic root of 252220420 is about 631.8200664129.

Adding to 252220420 its reverse (24022252), we get a palindrome (276242672).

The spelling of 252220420 in words is "two hundred fifty-two million, two hundred twenty thousand, four hundred twenty".