28331248180 has 24 divisors (see below), whose sum is σ = 59594640840. Its totient is φ = 11313638400.

The previous prime is 28331248163. The next prime is 28331248181. The reversal of 28331248180 is 8184213382.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16927571236 + 11403676944 = 130106^2 + 106788^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331248181) 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, 1166485 + ... + 1190524.

It is an arithmetic number, because the mean of its divisors is an integer number (2483110035).

Almost surely, 2^28331248180 is an apocalyptic number.

28331248180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28331248180 is an abundant number, since it is smaller than the sum of its proper divisors (31263392660).

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

28331248180 is a wasteful number, since it uses less digits than its factorization.

28331248180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357619 (or 2357617 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 28331248180 in words is "twenty-eight billion, three hundred thirty-one million, two hundred forty-eight thousand, one hundred eighty".