249317652 has 12 divisors (see below), whose sum is σ = 581741216. Its totient is φ = 83105880.

The previous prime is 249317587. The next prime is 249317659. The reversal of 249317652 is 256713942.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 249317652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249317659) 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 3 ways as a sum of consecutive naturals, for example, 10388224 + ... + 10388247.

Almost surely, 2^249317652 is an apocalyptic number.

It is an amenable number.

249317652 is an abundant number, since it is smaller than the sum of its proper divisors (332423564).

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

249317652 is a wasteful number, since it uses less digits than its factorization.

249317652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20776478 (or 20776476 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 249317652 is about 15789.7958188192. The cubic root of 249317652 is about 629.3868663116.

The spelling of 249317652 in words is "two hundred forty-nine million, three hundred seventeen thousand, six hundred fifty-two".