249128372 has 12 divisors (see below), whose sum is σ = 436117920. Its totient is φ = 124523256.

The previous prime is 249128371. The next prime is 249128381. The reversal of 249128372 is 273821942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249128371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6503 + ... + 23249.

It is an arithmetic number, because the mean of its divisors is an integer number (36343160).

Almost surely, 2^249128372 is an apocalyptic number.

It is an amenable number.

249128372 is a deficient number, since it is larger than the sum of its proper divisors (186989548).

249128372 is a wasteful number, since it uses less digits than its factorization.

249128372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20470 (or 20468 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 249128372 is about 15783.8009364031. The cubic root of 249128372 is about 629.2275508020.

The spelling of 249128372 in words is "two hundred forty-nine million, one hundred twenty-eight thousand, three hundred seventy-two".