249915472 has 20 divisors (see below), whose sum is σ = 484825120. Its totient is φ = 124799328.

The previous prime is 249915469. The next prime is 249915529. The reversal of 249915472 is 274519942.

249915472 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3679 + ... + 22657.

It is an arithmetic number, because the mean of its divisors is an integer number (24241256).

Almost surely, 2^249915472 is an apocalyptic number.

It is an amenable number.

249915472 is a deficient number, since it is larger than the sum of its proper divisors (234909648).

249915472 is a wasteful number, since it uses less digits than its factorization.

249915472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19810 (or 19804 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 249915472 is about 15808.7150647989. The cubic root of 249915472 is about 629.8895178731.

It can be divided in two parts, 2499 and 15472, that added together give a palindrome (17971).

The spelling of 249915472 in words is "two hundred forty-nine million, nine hundred fifteen thousand, four hundred seventy-two".