1249744228 has 12 divisors (see below), whose sum is σ = 2302160560. Its totient is φ = 591984072.

The previous prime is 1249744211. The next prime is 1249744229. The reversal of 1249744228 is 8224479421.

It is not an unprimeable number, because it can be changed into a prime (1249744229) 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, 8221926 + ... + 8222077.

Almost surely, 2^1249744228 is an apocalyptic number.

It is an amenable number.

1249744228 is a deficient number, since it is larger than the sum of its proper divisors (1052416332).

1249744228 is a wasteful number, since it uses less digits than its factorization.

1249744228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16444026 (or 16444024 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 1249744228 is about 35351.7217119619. The cubic root of 1249744228 is about 1077.1438674615.

The spelling of 1249744228 in words is "one billion, two hundred forty-nine million, seven hundred forty-four thousand, two hundred twenty-eight".