28189469373528 has 32 divisors (see below), whose sum is σ = 70474364674560. Its totient is φ = 9396397625760.

The previous prime is 28189469373517. The next prime is 28189469373581. The reversal of 28189469373528 is 82537396498182.

It is a super-2 number, since 2×28189469373528² (a number of 28 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 28189469373528.

It is a congruent number.

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, 3240000 + ... + 8177807.

It is an arithmetic number, because the mean of its divisors is an integer number (2202323896080).

Almost surely, 2^{28189469373528} is an apocalyptic number.

It is an amenable number.

28189469373528 is an abundant number, since it is smaller than the sum of its proper divisors (42284895301032).

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

28189469373528 is a wasteful number, since it uses less digits than its factorization.

28189469373528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11520687 (or 11520683 counting only the distinct ones).

The product of its digits is 1254113280, while the sum is 75.

The spelling of 28189469373528 in words is "twenty-eight trillion, one hundred eighty-nine billion, four hundred sixty-nine million, three hundred seventy-three thousand, five hundred twenty-eight".