28408183660 has 48 divisors (see below), whose sum is σ = 64397592000. Its totient is φ = 10494412544.

The previous prime is 28408183613. The next prime is 28408183679. The reversal of 28408183660 is 6638180482.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 28408183660.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051435 + ... + 1078114.

It is an arithmetic number, because the mean of its divisors is an integer number (1341616500).

Almost surely, 2^28408183660 is an apocalyptic number.

28408183660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28408183660 is an abundant number, since it is smaller than the sum of its proper divisors (35989408340).

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

28408183660 is a wasteful number, since it uses less digits than its factorization.

28408183660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129610 (or 2129608 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 28408183660 in words is "twenty-eight billion, four hundred eight million, one hundred eighty-three thousand, six hundred sixty".