249560880 has 40 divisors (see below), whose sum is σ = 773639472. Its totient is φ = 66549504.

The previous prime is 249560837. The next prime is 249560897. The reversal of 249560880 is 88065942.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519679 + ... + 520158.

Almost surely, 2^249560880 is an apocalyptic number.

249560880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249560880 is an abundant number, since it is smaller than the sum of its proper divisors (524078592).

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

249560880 is a wasteful number, since it uses less digits than its factorization.

249560880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039853 (or 1039847 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 249560880 is about 15797.4960041141. The cubic root of 249560880 is about 629.5914710968.

The spelling of 249560880 in words is "two hundred forty-nine million, five hundred sixty thousand, eight hundred eighty".