252940656 has 40 divisors (see below), whose sum is σ = 674512384. Its totient is φ = 81593280.

The previous prime is 252940643. The next prime is 252940657. The reversal of 252940656 is 656049252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252940657) 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 7 ways as a sum of consecutive naturals, for example, 83506 + ... + 86481.

Almost surely, 2^252940656 is an apocalyptic number.

It is an amenable number.

252940656 is an abundant number, since it is smaller than the sum of its proper divisors (421571728).

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

252940656 is a wasteful number, since it uses less digits than its factorization.

252940656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170029 (or 170023 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 252940656 is about 15904.1081485257. The cubic root of 252940656 is about 632.4208994594.

The spelling of 252940656 in words is "two hundred fifty-two million, nine hundred forty thousand, six hundred fifty-six".