999997828 has 24 divisors (see below), whose sum is σ = 1777012160. Its totient is φ = 492337440.

The previous prime is 999997811. The next prime is 999997871. The reversal of 999997828 is 828799999.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64033 + ... + 78103.

Almost surely, 2^999997828 is an apocalyptic number.

It is an amenable number.

999997828 is a deficient number, since it is larger than the sum of its proper divisors (777014332).

999997828 is a wasteful number, since it uses less digits than its factorization.

999997828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14347 (or 14345 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 70.

The square root of 999997828 is about 31622.7422593298. The cubic root of 999997828 is about 999.9992759995. Note that the first 3 decimals are identical.

The spelling of 999997828 in words is "nine hundred ninety-nine million, nine hundred ninety-seven thousand, eight hundred twenty-eight".