28100613580 has 36 divisors (see below), whose sum is σ = 63899805312. Its totient is φ = 10375609920.

The previous prime is 28100613533. The next prime is 28100613589. The reversal of 28100613580 is 8531600182.

It is not an unprimeable number, because it can be changed into a prime (28100613589) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4153516 + ... + 4160275.

It is an arithmetic number, because the mean of its divisors is an integer number (1774994592).

Almost surely, 2^28100613580 is an apocalyptic number.

28100613580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28100613580 is an abundant number, since it is smaller than the sum of its proper divisors (35799191732).

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

28100613580 is a wasteful number, since it uses less digits than its factorization.

28100613580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8313826 (or 8313811 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 28100613580 in words is "twenty-eight billion, one hundred million, six hundred thirteen thousand, five hundred eighty".