28694922984 has 96 divisors (see below), whose sum is σ = 95649765120. Its totient is φ = 7567890048.

The previous prime is 28694922979. The next prime is 28694922989. The reversal of 28694922984 is 48922949682.

28694922984 is a `hidden beast` number, since 2 + 8 + 69 + 492 + 2 + 9 + 84 = 666.

It is an interprime number because it is at equal distance from previous prime (28694922979) and next prime (28694922989).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28694922989) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2183232 + ... + 2196335.

It is an arithmetic number, because the mean of its divisors is an integer number (996351720).

Almost surely, 2^28694922984 is an apocalyptic number.

28694922984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28694922984 is an abundant number, since it is smaller than the sum of its proper divisors (66954842136).

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

28694922984 is a wasteful number, since it uses less digits than its factorization.

28694922984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379599 (or 4379592 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The spelling of 28694922984 in words is "twenty-eight billion, six hundred ninety-four million, nine hundred twenty-two thousand, nine hundred eighty-four".