28674644780808 has 96 divisors (see below), whose sum is σ = 83636563832640. Its totient is φ = 8822737307520.

The previous prime is 28674644780777. The next prime is 28674644780809. The reversal of 28674644780808 is 80808744647682.

It is a happy number.

28674644780808 is a `hidden beast` number, since 2 + 8 + 6 + 7 + 464 + 4 + 7 + 80 + 80 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (28674644780809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37381363 + ... + 38140733.

It is an arithmetic number, because the mean of its divisors is an integer number (871214206590).

Almost surely, 2^{28674644780808} is an apocalyptic number.

It is an amenable number.

28674644780808 is an abundant number, since it is smaller than the sum of its proper divisors (54961919051832).

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

28674644780808 is a wasteful number, since it uses less digits than its factorization.

28674644780808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799739 (or 799732 counting only the distinct ones).

The product of its (nonzero) digits is 924844032, while the sum is 72.

The spelling of 28674644780808 in words is "twenty-eight trillion, six hundred seventy-four billion, six hundred forty-four million, seven hundred eighty thousand, eight hundred eight".