252191488 has 54 divisors (see below), whose sum is σ = 513884084. Its totient is φ = 123520512.

The previous prime is 252191477. The next prime is 252191501. The reversal of 252191488 is 884191252.

It is a self number, because there is not a number n which added to its sum of digits gives 252191488.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 890995 + ... + 891277.

Almost surely, 2^252191488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252191488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256942042).

252191488 is an abundant number, since it is smaller than the sum of its proper divisors (261692596).

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

252191488 is an frugal number, since it uses more digits than its factorization.

252191488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 344 counting only the distinct ones).

The product of its digits is 46080, while the sum is 40.

The square root of 252191488 is about 15880.5380261501. The cubic root of 252191488 is about 631.7959069665.

The spelling of 252191488 in words is "two hundred fifty-two million, one hundred ninety-one thousand, four hundred eighty-eight".