999670028 has 24 divisors (see below), whose sum is σ = 2104569600. Its totient is φ = 405880848.

The previous prime is 999670019. The next prime is 999670031. The reversal of 999670028 is 820076999.

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, 939008 + ... + 940071.

It is an arithmetic number, because the mean of its divisors is an integer number (87690400).

Almost surely, 2^999670028 is an apocalyptic number.

It is an amenable number.

999670028 is an abundant number, since it is smaller than the sum of its proper divisors (1104899572).

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

999670028 is a wasteful number, since it uses less digits than its factorization.

999670028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879109 (or 1879107 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 999670028 is about 31617.5588558004. The cubic root of 999670028 is about 999.8899972332.

The spelling of 999670028 in words is "nine hundred ninety-nine million, six hundred seventy thousand, twenty-eight".