278050030028 has 12 divisors (see below), whose sum is σ = 487381337520. Its totient is φ = 138798219312.

The previous prime is 278050030019. The next prime is 278050030061. The reversal of 278050030028 is 820030050872.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 278050030028.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56696168 + ... + 56701071.

It is an arithmetic number, because the mean of its divisors is an integer number (40615111460).

Almost surely, 2^278050030028 is an apocalyptic number.

It is an amenable number.

278050030028 is a deficient number, since it is larger than the sum of its proper divisors (209331307492).

278050030028 is a wasteful number, since it uses less digits than its factorization.

278050030028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113397856 (or 113397854 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 278050030028 in words is "two hundred seventy-eight billion, fifty million, thirty thousand, twenty-eight".