30007047978 has 24 divisors (see below), whose sum is σ = 65287310400. Its totient is φ = 9960497064.

The previous prime is 30007047953. The next prime is 30007048013. The reversal of 30007047978 is 87974070003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3483268 + ... + 3491871.

It is an arithmetic number, because the mean of its divisors is an integer number (2720304600).

Almost surely, 2^30007047978 is an apocalyptic number.

30007047978 is an abundant number, since it is smaller than the sum of its proper divisors (35280262422).

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

30007047978 is a wasteful number, since it uses less digits than its factorization.

30007047978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6975386 (or 6975383 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The spelling of 30007047978 in words is "thirty billion, seven million, forty-seven thousand, nine hundred seventy-eight".