28427772306 has 32 divisors (see below), whose sum is σ = 57157067520. Its totient is φ = 9425759616.

The previous prime is 28427772271. The next prime is 28427772313. The reversal of 28427772306 is 60327772482.

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, 1333080 + ... + 1354236.

It is an arithmetic number, because the mean of its divisors is an integer number (1786158360).

Almost surely, 2^28427772306 is an apocalyptic number.

28427772306 is an abundant number, since it is smaller than the sum of its proper divisors (28729295214).

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

28427772306 is a wasteful number, since it uses less digits than its factorization.

28427772306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22338.

The product of its (nonzero) digits is 1580544, while the sum is 48.

The spelling of 28427772306 in words is "twenty-eight billion, four hundred twenty-seven million, seven hundred seventy-two thousand, three hundred six".