30408907728 has 40 divisors (see below), whose sum is σ = 80038546848. Its totient is φ = 9945050752.

The previous prime is 30408907681. The next prime is 30408907733. The reversal of 30408907728 is 82770980403.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5974050 + ... + 5979137.

Almost surely, 2^30408907728 is an apocalyptic number.

It is an amenable number.

30408907728 is an abundant number, since it is smaller than the sum of its proper divisors (49629639120).

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

30408907728 is a wasteful number, since it uses less digits than its factorization.

30408907728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11953251 (or 11953245 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 30408907728 in words is "thirty billion, four hundred eight million, nine hundred seven thousand, seven hundred twenty-eight".