252649408 has 28 divisors (see below), whose sum is σ = 546930072. Its totient is φ = 114840320.

The previous prime is 252649399. The next prime is 252649409. The reversal of 252649408 is 804946252.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252649409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178735 + ... + 180142.

Almost surely, 2^252649408 is an apocalyptic number.

It is an amenable number.

252649408 is an abundant number, since it is smaller than the sum of its proper divisors (294280664).

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

252649408 is a wasteful number, since it uses less digits than its factorization.

252649408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358900 (or 358890 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 252649408 is about 15894.9491348667. The cubic root of 252649408 is about 632.1780729853.

The spelling of 252649408 in words is "two hundred fifty-two million, six hundred forty-nine thousand, four hundred eight".