28811673860 has 48 divisors (see below), whose sum is σ = 61390586880. Its totient is φ = 11357026560.

The previous prime is 28811673859. The next prime is 28811673901. The reversal of 28811673860 is 6837611882.

It is a super-2 number, since 2×28811673860² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28811673799 and 28811673808.

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, 373496 + ... + 443984.

It is an arithmetic number, because the mean of its divisors is an integer number (1278970560).

Almost surely, 2^28811673860 is an apocalyptic number.

28811673860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28811673860 is an abundant number, since it is smaller than the sum of its proper divisors (32578913020).

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

28811673860 is a wasteful number, since it uses less digits than its factorization.

28811673860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70796 (or 70794 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 28811673860 in words is "twenty-eight billion, eight hundred eleven million, six hundred seventy-three thousand, eight hundred sixty".