252286660 has 24 divisors (see below), whose sum is σ = 548072280. Its totient is φ = 97434624.

The previous prime is 252286607. The next prime is 252286663. The reversal of 252286660 is 66682252.

It can be written as a sum of positive squares in 4 ways, for example, as 21307456 + 230979204 = 4616^2 + 15198^2 .

It is not an unprimeable number, because it can be changed into a prime (252286663) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 216909 + ... + 218068.

It is an arithmetic number, because the mean of its divisors is an integer number (22836345).

Almost surely, 2^252286660 is an apocalyptic number.

252286660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252286660 is an abundant number, since it is smaller than the sum of its proper divisors (295785620).

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

252286660 is a wasteful number, since it uses less digits than its factorization.

252286660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435015 (or 435013 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 252286660 is about 15883.5342414716. The cubic root of 252286660 is about 631.8753726644.

The spelling of 252286660 in words is "two hundred fifty-two million, two hundred eighty-six thousand, six hundred sixty".