252035640 has 48 divisors (see below), whose sum is σ = 819117000. Its totient is φ = 67209408.

The previous prime is 252035593. The next prime is 252035657. The reversal of 252035640 is 46530252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349690 + ... + 350409.

Almost surely, 2^252035640 is an apocalyptic number.

252035640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252035640 is an abundant number, since it is smaller than the sum of its proper divisors (567081360).

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

252035640 is a wasteful number, since it uses less digits than its factorization.

252035640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700116 (or 700109 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 252035640 is about 15875.6303811849. The cubic root of 252035640 is about 631.6657354858.

Adding to 252035640 its reverse (46530252), we get a palindrome (298565892).

The spelling of 252035640 in words is "two hundred fifty-two million, thirty-five thousand, six hundred forty".