1249458028 has 24 divisors (see below), whose sum is σ = 2691141152. Its totient is φ = 494290944.

The previous prime is 1249457977. The next prime is 1249458037. The reversal of 1249458028 is 8208549421.

It is a super-2 number, since 2×1249458028² = 3122290727467297568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715925 + ... + 1716652.

Almost surely, 2^1249458028 is an apocalyptic number.

It is an amenable number.

1249458028 is an abundant number, since it is smaller than the sum of its proper divisors (1441683124).

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

1249458028 is a wasteful number, since it uses less digits than its factorization.

1249458028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432601 (or 3432599 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 1249458028 is about 35347.6735868147. The cubic root of 1249458028 is about 1077.0616367395.

The spelling of 1249458028 in words is "one billion, two hundred forty-nine million, four hundred fifty-eight thousand, twenty-eight".