252450040 has 16 divisors (see below), whose sum is σ = 568012680. Its totient is φ = 100980000.

The previous prime is 252449963. The next prime is 252450041. The reversal of 252450040 is 40054252.

It is a junction number, because it is equal to n+sod(n) for n = 252449993 and 252450020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252450041) 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, 3155586 + ... + 3155665.

Almost surely, 2^252450040 is an apocalyptic number.

252450040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252450040 is an abundant number, since it is smaller than the sum of its proper divisors (315562640).

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

252450040 is a wasteful number, since it uses less digits than its factorization.

252450040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311262 (or 6311258 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 252450040 is about 15888.6764709966. The cubic root of 252450040 is about 632.0117433592.

The spelling of 252450040 in words is "two hundred fifty-two million, four hundred fifty thousand, forty".