28189099522 has 16 divisors (see below), whose sum is σ = 43273055232. Its totient is φ = 13764839760.

The previous prime is 28189099513. The next prime is 28189099531. The reversal of 28189099522 is 22599098182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28189099513) and next prime (28189099531).

It is a super-2 number, since 2×28189099522² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740908 + ... + 778024.

It is an arithmetic number, because the mean of its divisors is an integer number (2704565952).

Almost surely, 2^28189099522 is an apocalyptic number.

28189099522 is a deficient number, since it is larger than the sum of its proper divisors (15083955710).

28189099522 is a wasteful number, since it uses less digits than its factorization.

28189099522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45993.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 28189099522 in words is "twenty-eight billion, one hundred eighty-nine million, ninety-nine thousand, five hundred twenty-two".