249732228 has 12 divisors (see below), whose sum is σ = 582708560. Its totient is φ = 83244072.

The previous prime is 249732221. The next prime is 249732251. The reversal of 249732228 is 822237942.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (249732221) by changing a digit.

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, 10405498 + ... + 10405521.

Almost surely, 2^249732228 is an apocalyptic number.

It is an amenable number.

249732228 is an abundant number, since it is smaller than the sum of its proper divisors (332976332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249732228 is a wasteful number, since it uses less digits than its factorization.

249732228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20811026 (or 20811024 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 249732228 is about 15802.9183380792. The cubic root of 249732228 is about 629.7355302123.

The spelling of 249732228 in words is "two hundred forty-nine million, seven hundred thirty-two thousand, two hundred twenty-eight".