28424787481 has 8 divisors (see below), whose sum is σ = 28909893600. Its totient is φ = 27939792480.

The previous prime is 28424787451. The next prime is 28424787509. The reversal of 28424787481 is 18478742482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28424787481 - 2²³ = 28416398873 is a prime.

It is a super-2 number, since 2×28424787481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 613125 + ... + 657853.

It is an arithmetic number, because the mean of its divisors is an integer number (3613736700).

Almost surely, 2^28424787481 is an apocalyptic number.

It is an amenable number.

28424787481 is a deficient number, since it is larger than the sum of its proper divisors (485106119).

28424787481 is a wasteful number, since it uses less digits than its factorization.

28424787481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55559.

The product of its digits is 6422528, while the sum is 55.

The spelling of 28424787481 in words is "twenty-eight billion, four hundred twenty-four million, seven hundred eighty-seven thousand, four hundred eighty-one".