28304765628984 has 48 divisors (see below), whose sum is σ = 82555566420600. Its totient is φ = 8709158654784.

The previous prime is 28304765628983. The next prime is 28304765629009. The reversal of 28304765628984 is 48982656740382.

28304765628984 is a `hidden beast` number, since 2 + 8 + 3 + 0 + 476 + 5 + 62 + 8 + 98 + 4 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28304765628983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15120066174 + ... + 15120068045.

Almost surely, 2^{28304765628984} is an apocalyptic number.

28304765628984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28304765628984 is an abundant number, since it is smaller than the sum of its proper divisors (54250800791616).

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

28304765628984 is a wasteful number, since it uses less digits than its factorization.

28304765628984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30240134244 (or 30240134237 counting only the distinct ones).

The product of its (nonzero) digits is 1114767360, while the sum is 72.

The spelling of 28304765628984 in words is "twenty-eight trillion, three hundred four billion, seven hundred sixty-five million, six hundred twenty-eight thousand, nine hundred eighty-four".