252034640 has 80 divisors (see below), whose sum is σ = 688455936. Its totient is φ = 84595200.

The previous prime is 252034609. The next prime is 252034669. The reversal of 252034640 is 46430252.

252034640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 425 + ... + 22455.

Almost surely, 2^252034640 is an apocalyptic number.

252034640 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 252034640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344227968).

252034640 is an abundant number, since it is smaller than the sum of its proper divisors (436421296).

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

252034640 is a wasteful number, since it uses less digits than its factorization.

252034640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22068 (or 22062 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 252034640 is about 15875.5988863413. The cubic root of 252034640 is about 631.6649000661.

Adding to 252034640 its reverse (46430252), we get a palindrome (298464892).

The spelling of 252034640 in words is "two hundred fifty-two million, thirty-four thousand, six hundred forty".