252995440 has 20 divisors (see below), whose sum is σ = 588214584. Its totient is φ = 101198144.

The previous prime is 252995383. The next prime is 252995467. The reversal of 252995440 is 44599252.

252995440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 252995393 and 252995402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1581142 + ... + 1581301.

Almost surely, 2^252995440 is an apocalyptic number.

252995440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252995440 is an abundant number, since it is smaller than the sum of its proper divisors (335219144).

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

252995440 is a wasteful number, since it uses less digits than its factorization.

252995440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162456 (or 3162450 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 252995440 is about 15905.8303775691. The cubic root of 252995440 is about 632.4665544970.

It can be divided in two parts, 2529 and 95440, that added together give a square (97969 = 313²).

The spelling of 252995440 in words is "two hundred fifty-two million, nine hundred ninety-five thousand, four hundred forty".