28959117822 has 48 divisors (see below), whose sum is σ = 63550403280. Its totient is φ = 9529276416.

The previous prime is 28959117793. The next prime is 28959117841. The reversal of 28959117822 is 22871195982.

28959117822 is a `hidden beast` number, since 28 + 9 + 591 + 1 + 7 + 8 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2098168 + ... + 2111924.

It is an arithmetic number, because the mean of its divisors is an integer number (1323966735).

Almost surely, 2^28959117822 is an apocalyptic number.

28959117822 is an abundant number, since it is smaller than the sum of its proper divisors (34591285458).

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

28959117822 is a wasteful number, since it uses less digits than its factorization.

28959117822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15257 (or 15254 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The spelling of 28959117822 in words is "twenty-eight billion, nine hundred fifty-nine million, one hundred seventeen thousand, eight hundred twenty-two".