1249728474 has 8 divisors (see below), whose sum is σ = 2499456960. Its totient is φ = 416576156.

The previous prime is 1249728433. The next prime is 1249728509. The reversal of 1249728474 is 4748279421.

It is a sphenic number, since it is the product of 3 distinct primes.

1249728474 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104144034 + ... + 104144045.

It is an arithmetic number, because the mean of its divisors is an integer number (312432120).

Almost surely, 2^1249728474 is an apocalyptic number.

1249728474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1249728474 is a wasteful number, since it uses less digits than its factorization.

1249728474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208288084.

The product of its digits is 903168, while the sum is 48.

The square root of 1249728474 is about 35351.4988932577. The cubic root of 1249728474 is about 1077.1393413632.

The spelling of 1249728474 in words is "one billion, two hundred forty-nine million, seven hundred twenty-eight thousand, four hundred seventy-four".