252990234 has 72 divisors (see below), whose sum is σ = 640179540. Its totient is φ = 71995392.

The previous prime is 252990233. The next prime is 252990247. The reversal of 252990234 is 432099252.

It can be written as a sum of positive squares in 2 ways, for example, as 252714609 + 275625 = 15897^2 + 525^2 .

It is not an unprimeable number, because it can be changed into a prime (252990233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 328602 + ... + 329370.

Almost surely, 2^252990234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252990234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320089770).

252990234 is an abundant number, since it is smaller than the sum of its proper divisors (387189306).

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

252990234 is a wasteful number, since it uses less digits than its factorization.

252990234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 252990234 is about 15905.6667260445. Note that the first 3 decimals coincide. The cubic root of 252990234 is about 632.4622162851.

The spelling of 252990234 in words is "two hundred fifty-two million, nine hundred ninety thousand, two hundred thirty-four".