249801772 has 48 divisors (see below), whose sum is σ = 487202688. Its totient is φ = 111121920.

The previous prime is 249801767. The next prime is 249801803. The reversal of 249801772 is 277108942.

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, 456403 + ... + 456949.

It is an arithmetic number, because the mean of its divisors is an integer number (10150056).

Almost surely, 2^249801772 is an apocalyptic number.

249801772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

249801772 is a deficient number, since it is larger than the sum of its proper divisors (237400916).

249801772 is a wasteful number, since it uses less digits than its factorization.

249801772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 249801772 is about 15805.1185379927. The cubic root of 249801772 is about 629.7939798346.

The spelling of 249801772 in words is "two hundred forty-nine million, eight hundred one thousand, seven hundred seventy-two".