30012427028 has 12 divisors (see below), whose sum is σ = 55611261972. Its totient is φ = 14123495040.

The previous prime is 30012427007. The next prime is 30012427031. The reversal of 30012427028 is 82072421003.

It can be written as a sum of positive squares in 2 ways, for example, as 17157856144 + 12854570884 = 130988^2 + 113378^2 .

It is a super-2 number, since 2×30012427028² (a number of 22 digits) contains 22 as substring.

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, 220679543 + ... + 220679678.

It is an arithmetic number, because the mean of its divisors is an integer number (4634271831).

Almost surely, 2^30012427028 is an apocalyptic number.

It is an amenable number.

30012427028 is a deficient number, since it is larger than the sum of its proper divisors (25598834944).

30012427028 is a wasteful number, since it uses less digits than its factorization.

30012427028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441359242 (or 441359240 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The spelling of 30012427028 in words is "thirty billion, twelve million, four hundred twenty-seven thousand, twenty-eight".