252690 has 16 divisors (see below), whose sum is σ = 606528. Its totient is φ = 67376.

The previous prime is 252667. The next prime is 252691. The reversal of 252690 is 96252.

It is a super-2 number, since 2×252690² = 127704472200, which contains 22 as substring.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 252690.

It is not an unprimeable number, because it can be changed into a prime (252691) by changing a digit.

252690 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4182 + ... + 4241.

It is an arithmetic number, because the mean of its divisors is an integer number (37908).

2²⁵²⁶⁹⁰ is an apocalyptic number.

252690 is an abundant number, since it is smaller than the sum of its proper divisors (353838).

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

252690 is a wasteful number, since it uses less digits than its factorization.

252690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8433.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 252690 is about 502.6828025704. The cubic root of 252690 is about 63.2211927538.

The spelling of 252690 in words is "two hundred fifty-two thousand, six hundred ninety".