249512428 has 24 divisors (see below), whose sum is σ = 491710464. Its totient is φ = 109755600.

The previous prime is 249512411. The next prime is 249512447. The reversal of 249512428 is 824215942.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90100 + ... + 92827.

It is an arithmetic number, because the mean of its divisors is an integer number (20487936).

Almost surely, 2^249512428 is an apocalyptic number.

It is an amenable number.

249512428 is a deficient number, since it is larger than the sum of its proper divisors (242198036).

249512428 is a wasteful number, since it uses less digits than its factorization.

249512428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182973 (or 182971 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 249512428 is about 15795.9623954984. The cubic root of 249512428 is about 629.5507236042.

The spelling of 249512428 in words is "two hundred forty-nine million, five hundred twelve thousand, four hundred twenty-eight".