30406256620 has 12 divisors (see below), whose sum is σ = 63853138944. Its totient is φ = 12162502640.

The previous prime is 30406256591. The next prime is 30406256653. The reversal of 30406256620 is 2665260403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760156396 + ... + 760156435.

It is an arithmetic number, because the mean of its divisors is an integer number (5321094912).

Almost surely, 2^30406256620 is an apocalyptic number.

It is an amenable number.

30406256620 is an abundant number, since it is smaller than the sum of its proper divisors (33446882324).

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

30406256620 is a wasteful number, since it uses less digits than its factorization.

30406256620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520312840 (or 1520312838 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 30406256620 in words is "thirty billion, four hundred six million, two hundred fifty-six thousand, six hundred twenty".