249271228 has 24 divisors (see below), whose sum is σ = 445860800. Its totient is φ = 121912128.

The previous prime is 249271223. The next prime is 249271259. The reversal of 249271228 is 822172942.

It is a super-2 number, since 2×249271228² = 124272290217255968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249271223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30826 + ... + 38062.

Almost surely, 2^249271228 is an apocalyptic number.

It is an amenable number.

249271228 is a deficient number, since it is larger than the sum of its proper divisors (196589572).

249271228 is a wasteful number, since it uses less digits than its factorization.

249271228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7429 (or 7427 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 249271228 is about 15788.3256870385. The cubic root of 249271228 is about 629.3477990556.

The spelling of 249271228 in words is "two hundred forty-nine million, two hundred seventy-one thousand, two hundred twenty-eight".