30678878280 has 64 divisors (see below), whose sum is σ = 93773194560. Its totient is φ = 8026673408.

The previous prime is 30678878273. The next prime is 30678878281. The reversal of 30678878280 is 8287887603.

It is a self number, because there is not a number n which added to its sum of digits gives 30678878280.

It is not an unprimeable number, because it can be changed into a prime (30678878281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2405502 + ... + 2418221.

It is an arithmetic number, because the mean of its divisors is an integer number (1465206165).

Almost surely, 2^30678878280 is an apocalyptic number.

30678878280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30678878280 is an abundant number, since it is smaller than the sum of its proper divisors (63094316280).

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

30678878280 is a wasteful number, since it uses less digits than its factorization.

30678878280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823790 (or 4823786 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 30678878280 in words is "thirty billion, six hundred seventy-eight million, eight hundred seventy-eight thousand, two hundred eighty".