30308080788 has 18 divisors (see below), whose sum is σ = 76612093194. Its totient is φ = 10102693584.

The previous prime is 30308080787. The next prime is 30308080799. The reversal of 30308080788 is 88708080303.

It can be written as a sum of positive squares in only one way, i.e., 26218734084 + 4089346704 = 161922^2 + 63948^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×30308080788² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30308080787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 420945531 + ... + 420945602.

Almost surely, 2^30308080788 is an apocalyptic number.

It is an amenable number.

30308080788 is an abundant number, since it is smaller than the sum of its proper divisors (46304012406).

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

30308080788 is a wasteful number, since it uses less digits than its factorization.

30308080788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841891143 (or 841891138 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 30308080788 in words is "thirty billion, three hundred eight million, eighty thousand, seven hundred eighty-eight".