28163302840 has 32 divisors (see below), whose sum is σ = 65411544960. Its totient is φ = 10901923200.

The previous prime is 28163302831. The next prime is 28163302891. The reversal of 28163302840 is 4820336182.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28163302840.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 11354931 + ... + 11357410.

It is an arithmetic number, because the mean of its divisors is an integer number (2044110780).

Almost surely, 2^28163302840 is an apocalyptic number.

28163302840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28163302840 is an abundant number, since it is smaller than the sum of its proper divisors (37248242120).

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

28163302840 is a wasteful number, since it uses less digits than its factorization.

28163302840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22712383 (or 22712379 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 28163302840 in words is "twenty-eight billion, one hundred sixty-three million, three hundred two thousand, eight hundred forty".