249066728 has 16 divisors (see below), whose sum is σ = 494470980. Its totient is φ = 117207808.

The previous prime is 249066691. The next prime is 249066743. The reversal of 249066728 is 827660942.

It can be written as a sum of positive squares in 2 ways, for example, as 225660484 + 23406244 = 15022^2 + 4838^2 .

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, 915551 + ... + 915822.

Almost surely, 2^249066728 is an apocalyptic number.

It is an amenable number.

249066728 is a deficient number, since it is larger than the sum of its proper divisors (245404252).

249066728 is a wasteful number, since it uses less digits than its factorization.

249066728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831396 (or 1831392 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 249066728 is about 15781.8480540145. The cubic root of 249066728 is about 629.1756481055.

The spelling of 249066728 in words is "two hundred forty-nine million, sixty-six thousand, seven hundred twenty-eight".