999530672 has 40 divisors (see below), whose sum is σ = 2219500800. Its totient is φ = 427159872.

The previous prime is 999530671. The next prime is 999530747. The reversal of 999530672 is 276035999.

It is a self number, because there is not a number n which added to its sum of digits gives 999530672.

It is not an unprimeable number, because it can be changed into a prime (999530671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27779 + ... + 52637.

It is an arithmetic number, because the mean of its divisors is an integer number (55487520).

Almost surely, 2^999530672 is an apocalyptic number.

It is an amenable number.

999530672 is an abundant number, since it is smaller than the sum of its proper divisors (1219970128).

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

999530672 is a wasteful number, since it uses less digits than its factorization.

999530672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25233 (or 25227 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 999530672 is about 31615.3550035422. The cubic root of 999530672 is about 999.8435328526.

The spelling of 999530672 in words is "nine hundred ninety-nine million, five hundred thirty thousand, six hundred seventy-two".