252240 has 40 divisors (see below), whose sum is σ = 782688. Its totient is φ = 67200.

The previous prime is 252233. The next prime is 252253. The reversal of 252240 is 42252.

252240 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 (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286 + ... + 765.

2²⁵²²⁴⁰ is an apocalyptic number.

252240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252240 is an abundant number, since it is smaller than the sum of its proper divisors (530448).

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

252240 is a wasteful number, since it uses less digits than its factorization.

252240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 252240 is about 502.2350047538. The cubic root of 252240 is about 63.1836415495.

Adding to 252240 its reverse (42252), we get a palindrome (294492).

The spelling of 252240 in words is "two hundred fifty-two thousand, two hundred forty".