28156714655800 has 24 divisors (see below), whose sum is σ = 65464361575200. Its totient is φ = 11262685862240.

The previous prime is 28156714655791. The next prime is 28156714655801. The reversal of 28156714655800 is 855641765182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28156714655801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70391786440 + ... + 70391786839.

It is an arithmetic number, because the mean of its divisors is an integer number (2727681732300).

Almost surely, 2^{28156714655800} is an apocalyptic number.

28156714655800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28156714655800 is an abundant number, since it is smaller than the sum of its proper divisors (37307646919400).

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

28156714655800 is a wasteful number, since it uses less digits than its factorization.

28156714655800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140783573295 (or 140783573286 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 58.

The spelling of 28156714655800 in words is "twenty-eight trillion, one hundred fifty-six billion, seven hundred fourteen million, six hundred fifty-five thousand, eight hundred".