252412220 has 12 divisors (see below), whose sum is σ = 530065704. Its totient is φ = 100964880.

The previous prime is 252412217. The next prime is 252412253. The reversal of 252412220 is 22214252.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 12620611 = 252412220 / (2 + 5 + 2 + 4 + 1 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 252412192 and 252412201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6310286 + ... + 6310325.

It is an arithmetic number, because the mean of its divisors is an integer number (44172142).

Almost surely, 2^252412220 is an apocalyptic number.

252412220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252412220 is an abundant number, since it is smaller than the sum of its proper divisors (277653484).

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

252412220 is a wasteful number, since it uses less digits than its factorization.

252412220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12620620 (or 12620618 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 252412220 is about 15887.4862706471. The cubic root of 252412220 is about 631.9801808398.

Adding to 252412220 its reverse (22214252), we get a palindrome (274626472).

The spelling of 252412220 in words is "two hundred fifty-two million, four hundred twelve thousand, two hundred twenty".