28278032750 has 48 divisors (see below), whose sum is σ = 58186438128. Its totient is φ = 10282910000.

The previous prime is 28278032749. The next prime is 28278032773. The reversal of 28278032750 is 5723087282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 437156 + ... + 497655.

It is an arithmetic number, because the mean of its divisors is an integer number (1212217461).

Almost surely, 2^28278032750 is an apocalyptic number.

28278032750 is an abundant number, since it is smaller than the sum of its proper divisors (29908405378).

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

28278032750 is a wasteful number, since it uses less digits than its factorization.

28278032750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934850 (or 934829 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 28278032750 in words is "twenty-eight billion, two hundred seventy-eight million, thirty-two thousand, seven hundred fifty".