249889080 has 64 divisors (see below), whose sum is σ = 856765440. Its totient is φ = 57117312.

The previous prime is 249889037. The next prime is 249889093. The reversal of 249889080 is 80988942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147904 + ... + 149583.

It is an arithmetic number, because the mean of its divisors is an integer number (13386960).

Almost surely, 2^249889080 is an apocalyptic number.

249889080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249889080 is an abundant number, since it is smaller than the sum of its proper divisors (606876360).

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

249889080 is a wasteful number, since it uses less digits than its factorization.

249889080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297508 (or 297504 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 249889080 is about 15807.8803133121. The cubic root of 249889080 is about 629.8673442034.

The spelling of 249889080 in words is "two hundred forty-nine million, eight hundred eighty-nine thousand, eighty".