249492393728 has 36 divisors (see below), whose sum is σ = 498559745880. Its totient is φ = 124608543744.

The previous prime is 249492393721. The next prime is 249492393751. The reversal of 249492393728 is 827393294942.

249492393728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249492393721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305063 + ... + 769446.

It is an arithmetic number, because the mean of its divisors is an integer number (13848881830).

Almost surely, 2^249492393728 is an apocalyptic number.

It is an amenable number.

249492393728 is a deficient number, since it is larger than the sum of its proper divisors (249067352152).

249492393728 is an equidigital number, since it uses as much as digits as its factorization.

249492393728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075432 (or 1075418 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 62.

The spelling of 249492393728 in words is "two hundred forty-nine billion, four hundred ninety-two million, three hundred ninety-three thousand, seven hundred twenty-eight".