28078734036 has 48 divisors (see below), whose sum is σ = 66502868544. Its totient is φ = 9219764736.

The previous prime is 28078734023. The next prime is 28078734053. The reversal of 28078734036 is 63043787082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157510 + ... + 284546.

It is an arithmetic number, because the mean of its divisors is an integer number (1385476428).

Almost surely, 2^28078734036 is an apocalyptic number.

It is an amenable number.

28078734036 is an abundant number, since it is smaller than the sum of its proper divisors (38424134508).

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

28078734036 is a wasteful number, since it uses less digits than its factorization.

28078734036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127320 (or 127318 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 28078734036 in words is "twenty-eight billion, seventy-eight million, seven hundred thirty-four thousand, thirty-six".