28086506460 has 96 divisors (see below), whose sum is σ = 87412147200. Its totient is φ = 7487000640.

The previous prime is 28086506423. The next prime is 28086506471. The reversal of 28086506460 is 6460568082.

28086506460 is a `hidden beast` number, since 2 + 8 + 0 + 86 + 506 + 4 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1784425 + ... + 1800095.

It is an arithmetic number, because the mean of its divisors is an integer number (910543200).

Almost surely, 2^28086506460 is an apocalyptic number.

28086506460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28086506460 is an abundant number, since it is smaller than the sum of its proper divisors (59325640740).

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

28086506460 is a wasteful number, since it uses less digits than its factorization.

28086506460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19008 (or 19000 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 28086506460 in words is "twenty-eight billion, eighty-six million, five hundred six thousand, four hundred sixty".