28424787471 has 6 divisors (see below), whose sum is σ = 41058026360. Its totient is φ = 18949858308.

The previous prime is 28424787451. The next prime is 28424787509. The reversal of 28424787471 is 17478742482.

28424787471 is a `hidden beast` number, since 2 + 84 + 24 + 78 + 7 + 471 = 666.

It is not a de Polignac number, because 28424787471 - 2¹⁵ = 28424754703 is a prime.

It is a super-3 number, since 3×28424787471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28424787421) 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, 1579154851 + ... + 1579154868.

Almost surely, 2^28424787471 is an apocalyptic number.

28424787471 is a deficient number, since it is larger than the sum of its proper divisors (12633238889).

28424787471 is a wasteful number, since it uses less digits than its factorization.

28424787471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158309725 (or 3158309722 counting only the distinct ones).

The product of its digits is 5619712, while the sum is 54.

The spelling of 28424787471 in words is "twenty-eight billion, four hundred twenty-four million, seven hundred eighty-seven thousand, four hundred seventy-one".