28256156188760 has 32 divisors (see below), whose sum is σ = 63612008540640. Its totient is φ = 11296123432704.

The previous prime is 28256156188699. The next prime is 28256156188787. The reversal of 28256156188760 is 6788165165282.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198022877 + ... + 198165516.

It is an arithmetic number, because the mean of its divisors is an integer number (1987875266895).

Almost surely, 2^{28256156188760} is an apocalyptic number.

28256156188760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28256156188760 is an abundant number, since it is smaller than the sum of its proper divisors (35355852351880).

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

28256156188760 is a wasteful number, since it uses less digits than its factorization.

28256156188760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396190187 (or 396190183 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 65.

The spelling of 28256156188760 in words is "twenty-eight trillion, two hundred fifty-six billion, one hundred fifty-six million, one hundred eighty-eight thousand, seven hundred sixty".