28550204158 has 16 divisors (see below), whose sum is σ = 51822219744. Its totient is φ = 11516048640.

The previous prime is 28550204021. The next prime is 28550204159. The reversal of 28550204158 is 85140205582.

It is a super-2 number, since 2×28550204158² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28550204158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28550204159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59979183 + ... + 59979658.

It is an arithmetic number, because the mean of its divisors is an integer number (3238888734).

Almost surely, 2^28550204158 is an apocalyptic number.

28550204158 is a deficient number, since it is larger than the sum of its proper divisors (23272015586).

28550204158 is a wasteful number, since it uses less digits than its factorization.

28550204158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119958867.

The product of its (nonzero) digits is 128000, while the sum is 40.

The spelling of 28550204158 in words is "twenty-eight billion, five hundred fifty million, two hundred four thousand, one hundred fifty-eight".