252404560 has 20 divisors (see below), whose sum is σ = 586840788. Its totient is φ = 100961792.

The previous prime is 252404549. The next prime is 252404563. The reversal of 252404560 is 65404252.

It can be written as a sum of positive squares in 2 ways, for example, as 74235456 + 178169104 = 8616^2 + 13348^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252404563) 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 3 ways as a sum of consecutive naturals, for example, 1577449 + ... + 1577608.

Almost surely, 2^252404560 is an apocalyptic number.

252404560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252404560 is an abundant number, since it is smaller than the sum of its proper divisors (334436228).

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

252404560 is a wasteful number, since it uses less digits than its factorization.

252404560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155070 (or 3155064 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 252404560 is about 15887.2451985862. The cubic root of 252404560 is about 631.9737878356.

The spelling of 252404560 in words is "two hundred fifty-two million, four hundred four thousand, five hundred sixty".