30390256208 has 40 divisors (see below), whose sum is σ = 63760851336. Its totient is φ = 13948761600.

The previous prime is 30390256207. The next prime is 30390256229. The reversal of 30390256208 is 80265209303.

It can be written as a sum of positive squares in 4 ways, for example, as 332405824 + 30057850384 = 18232^2 + 173372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30390256207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365963 + ... + 441258.

Almost surely, 2^30390256208 is an apocalyptic number.

It is an amenable number.

30390256208 is an abundant number, since it is smaller than the sum of its proper divisors (33370595128).

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

30390256208 is a wasteful number, since it uses less digits than its factorization.

30390256208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807423 (or 807417 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 30390256208 in words is "thirty billion, three hundred ninety million, two hundred fifty-six thousand, two hundred eight".