82278028 has 24 divisors (see below), whose sum is σ = 174236832. Its totient is φ = 33187584.

The previous prime is 82278013. The next prime is 82278067. The reversal of 82278028 is 82087228.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85951 + ... + 86902.

It is an arithmetic number, because the mean of its divisors is an integer number (7259868).

Almost surely, 2^82278028 is an apocalyptic number.

It is an amenable number.

82278028 is an abundant number, since it is smaller than the sum of its proper divisors (91958804).

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

82278028 is a wasteful number, since it uses less digits than its factorization.

82278028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172881 (or 172879 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 82278028 is about 9070.7236756501. The cubic root of 82278028 is about 434.9386058596.

The spelling of 82278028 in words is "eighty-two million, two hundred seventy-eight thousand, twenty-eight".