30308085280728 has 64 divisors (see below), whose sum is σ = 84279749724000. Its totient is φ = 10091820220416.

The previous prime is 30308085280687. The next prime is 30308085280751. The reversal of 30308085280728 is 82708258080303.

It is a happy number.

30308085280728 is a `hidden beast` number, since 3 + 0 + 30 + 80 + 8 + 528 + 0 + 7 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75318825 + ... + 75720152.

Almost surely, 2^{30308085280728} is an apocalyptic number.

It is an amenable number.

30308085280728 is an abundant number, since it is smaller than the sum of its proper divisors (53971664443272).

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

30308085280728 is a wasteful number, since it uses less digits than its factorization.

30308085280728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151039921 (or 151039911 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 30308085280728 in words is "thirty trillion, three hundred eight billion, eighty-five million, two hundred eighty thousand, seven hundred twenty-eight".