252402240 has 112 divisors (see below), whose sum is σ = 806793408. Its totient is φ = 66852864.

The previous prime is 252402239. The next prime is 252402257. The reversal of 252402240 is 42204252.

252402240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155674 + ... + 157286.

Almost surely, 2^252402240 is an apocalyptic number.

252402240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252402240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403396704).

252402240 is an abundant number, since it is smaller than the sum of its proper divisors (554391168).

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

252402240 is a wasteful number, since it uses less digits than its factorization.

252402240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 252402240 is about 15887.1721838721. The cubic root of 252402240 is about 631.9718515477.

Adding to 252402240 its reverse (42204252), we get a palindrome (294606492).

The spelling of 252402240 in words is "two hundred fifty-two million, four hundred two thousand, two hundred forty".