28162771860 has 48 divisors (see below), whose sum is σ = 78863573376. Its totient is φ = 7509328512.

The previous prime is 28162771853. The next prime is 28162771867. The reversal of 28162771860 is 6817726182.

It is an interprime number because it is at equal distance from previous prime (28162771853) and next prime (28162771867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28162771867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 872937 + ... + 904623.

It is an arithmetic number, because the mean of its divisors is an integer number (1642991112).

Almost surely, 2^28162771860 is an apocalyptic number.

28162771860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28162771860 is an abundant number, since it is smaller than the sum of its proper divisors (50700801516).

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

28162771860 is a wasteful number, since it uses less digits than its factorization.

28162771860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46512 (or 46510 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 28162771860 in words is "twenty-eight billion, one hundred sixty-two million, seven hundred seventy-one thousand, eight hundred sixty".