249501328 has 20 divisors (see below), whose sum is σ = 484812720. Its totient is φ = 124388384.

The previous prime is 249501319. The next prime is 249501337. The reversal of 249501328 is 823105942.

It is an interprime number because it is at equal distance from previous prime (249501319) and next prime (249501337).

It is a junction number, because it is equal to n+sod(n) for n = 249501293 and 249501302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16918 + ... + 28021.

It is an arithmetic number, because the mean of its divisors is an integer number (24240636).

Almost surely, 2^249501328 is an apocalyptic number.

It is an amenable number.

249501328 is a deficient number, since it is larger than the sum of its proper divisors (235311392).

249501328 is a wasteful number, since it uses less digits than its factorization.

249501328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45294 (or 45288 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 249501328 is about 15795.6110359808. The cubic root of 249501328 is about 629.5413879080.

The spelling of 249501328 in words is "two hundred forty-nine million, five hundred one thousand, three hundred twenty-eight".