30099912 has 64 divisors (see below), whose sum is σ = 79272000. Its totient is φ = 9510144.

The previous prime is 30099851. The next prime is 30099917. The reversal of 30099912 is 21999003.

It is not an unprimeable number, because it can be changed into a prime (30099917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40698 + ... + 41430.

It is an arithmetic number, because the mean of its divisors is an integer number (1238625).

Almost surely, 2^30099912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30099912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39636000).

30099912 is an abundant number, since it is smaller than the sum of its proper divisors (49172088).

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

30099912 is a wasteful number, since it uses less digits than its factorization.

30099912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 30099912 is about 5486.3386698234. The cubic root of 30099912 is about 311.0678126062.

It can be divided in two parts, 3009 and 9912, that added together give a palindrome (12921).

The spelling of 30099912 in words is "thirty million, ninety-nine thousand, nine hundred twelve".