252990 has 32 divisors (see below), whose sum is σ = 675360. Its totient is φ = 67392.

The previous prime is 252983. The next prime is 253003. The reversal of 252990 is 99252.

252990 = T₃₅ + T₃₆ + ... + T₁₁₅.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

252990 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 15 ways as a sum of consecutive naturals, for example, 199 + ... + 738.

It is an arithmetic number, because the mean of its divisors is an integer number (21105).

2²⁵²⁹⁹⁰ is an apocalyptic number.

252990 is an abundant number, since it is smaller than the sum of its proper divisors (422370).

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

252990 is a wasteful number, since it uses less digits than its factorization.

252990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 252990 is about 502.9811129655. The cubic root of 252990 is about 63.2462021289.

The spelling of 252990 in words is "two hundred fifty-two thousand, nine hundred ninety".