999994728 has 32 divisors (see below), whose sum is σ = 2525765760. Its totient is φ = 329894400.

The previous prime is 999994703. The next prime is 999994741. The reversal of 999994728 is 827499999.

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, 212448 + ... + 217103.

It is an arithmetic number, because the mean of its divisors is an integer number (78930180).

Almost surely, 2^999994728 is an apocalyptic number.

It is an amenable number.

999994728 is an abundant number, since it is smaller than the sum of its proper divisors (1525771032).

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

999994728 is a wasteful number, since it uses less digits than its factorization.

999994728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429657 (or 429653 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 66.

The square root of 999994728 is about 31622.6932439348. The cubic root of 999994728 is about 999.9982426636.

The spelling of 999994728 in words is "nine hundred ninety-nine million, nine hundred ninety-four thousand, seven hundred twenty-eight".