249837564 has 12 divisors (see below), whose sum is σ = 582954344. Its totient is φ = 83279184.

The previous prime is 249837563. The next prime is 249837589. The reversal of 249837564 is 465738942.

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 (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249837563) 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, 10409887 + ... + 10409910.

Almost surely, 2^249837564 is an apocalyptic number.

It is an amenable number.

249837564 is an abundant number, since it is smaller than the sum of its proper divisors (333116780).

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

249837564 is a wasteful number, since it uses less digits than its factorization.

249837564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20819804 (or 20819802 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 249837564 is about 15806.2507888493. The cubic root of 249837564 is about 629.8240576965.

The spelling of 249837564 in words is "two hundred forty-nine million, eight hundred thirty-seven thousand, five hundred sixty-four".