252107220 has 48 divisors (see below), whose sum is σ = 719228160. Its totient is φ = 65959296.

The previous prime is 252107197. The next prime is 252107227. The reversal of 252107220 is 22701252.

It is a happy number.

It is a super-2 number, since 2×252107220² = 127116100752256800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252107227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36460 + ... + 42819.

It is an arithmetic number, because the mean of its divisors is an integer number (14983920).

Almost surely, 2^252107220 is an apocalyptic number.

252107220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252107220 is an abundant number, since it is smaller than the sum of its proper divisors (467120940).

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

252107220 is a wasteful number, since it uses less digits than its factorization.

252107220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79344 (or 79342 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 252107220 is about 15877.8846198100. The cubic root of 252107220 is about 631.7255290843.

Adding to 252107220 its reverse (22701252), we get a palindrome (274808472).

The spelling of 252107220 in words is "two hundred fifty-two million, one hundred seven thousand, two hundred twenty".