30816399228 has 12 divisors (see below), whose sum is σ = 71904931560. Its totient is φ = 10272133072.

The previous prime is 30816399203. The next prime is 30816399247. The reversal of 30816399228 is 82299361803.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×30816399228² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284016623 + ... + 1284016646.

It is an arithmetic number, because the mean of its divisors is an integer number (5992077630).

Almost surely, 2^30816399228 is an apocalyptic number.

It is an amenable number.

30816399228 is an abundant number, since it is smaller than the sum of its proper divisors (41088532332).

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

30816399228 is a wasteful number, since it uses less digits than its factorization.

30816399228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568033276 (or 2568033274 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 30816399228 in words is "thirty billion, eight hundred sixteen million, three hundred ninety-nine thousand, two hundred twenty-eight".