28992374487 has 6 divisors (see below), whose sum is σ = 41877874272. Its totient is φ = 19328249652.

The previous prime is 28992374473. The next prime is 28992374519. The reversal of 28992374487 is 78447329982.

28992374487 is a `hidden beast` number, since 2 + 89 + 9 + 2 + 3 + 74 + 487 = 666.

It is not a de Polignac number, because 28992374487 - 2¹⁰ = 28992373463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28992370487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1610687463 + ... + 1610687480.

It is an arithmetic number, because the mean of its divisors is an integer number (6979645712).

Almost surely, 2^28992374487 is an apocalyptic number.

28992374487 is a deficient number, since it is larger than the sum of its proper divisors (12885499785).

28992374487 is a wasteful number, since it uses less digits than its factorization.

28992374487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221374949 (or 3221374946 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 28992374487 in words is "twenty-eight billion, nine hundred ninety-two million, three hundred seventy-four thousand, four hundred eighty-seven".