252390 has 32 divisors (see below), whose sum is σ = 622080. Its totient is φ = 65504.

The previous prime is 252383. The next prime is 252391. The reversal of 252390 is 93252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1321 + ... + 1499.

It is an arithmetic number, because the mean of its divisors is an integer number (19440).

2²⁵²³⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311040).

252390 is an abundant number, since it is smaller than the sum of its proper divisors (369690).

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

252390 is a wasteful number, since it uses less digits than its factorization.

252390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 252390 is about 502.3843150418. The cubic root of 252390 is about 63.1961635763.

It can be divided in two parts, 25 and 2390, that added together give a triangular number (2415 = T₆₉).

The spelling of 252390 in words is "two hundred fifty-two thousand, three hundred ninety".