28102354479 has 12 divisors (see below), whose sum is σ = 40986391056. Its totient is φ = 18553010112.

The previous prime is 28102354457. The next prime is 28102354493. The reversal of 28102354479 is 97445320182.

28102354479 is a `hidden beast` number, since 2 + 8 + 10 + 23 + 544 + 79 = 666.

It is not a de Polignac number, because 28102354479 - 2¹¹ = 28102352431 is a prime.

It is a super-2 number, since 2×28102354479² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28102354429) 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 11 ways as a sum of consecutive naturals, for example, 15156762 + ... + 15158615.

It is an arithmetic number, because the mean of its divisors is an integer number (3415532588).

Almost surely, 2^28102354479 is an apocalyptic number.

28102354479 is a deficient number, since it is larger than the sum of its proper divisors (12884036577).

28102354479 is a wasteful number, since it uses less digits than its factorization.

28102354479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30315486 (or 30315483 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 28102354479 in words is "twenty-eight billion, one hundred two million, three hundred fifty-four thousand, four hundred seventy-nine".