28226983679 has 4 divisors (see below), whose sum is σ = 28231197720. Its totient is φ = 28222769640.

The previous prime is 28226983639. The next prime is 28226983693. The reversal of 28226983679 is 97638962282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97638962282 = 2 ⋅48819481141.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28226983679 is a prime.

It is a super-2 number, since 2×28226983679² (a number of 22 digits) contains 22 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 (28226983639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096957 + ... + 2110374.

It is an arithmetic number, because the mean of its divisors is an integer number (7057799430).

Almost surely, 2^28226983679 is an apocalyptic number.

28226983679 is a deficient number, since it is larger than the sum of its proper divisors (4214041).

28226983679 is an equidigital number, since it uses as much as digits as its factorization.

28226983679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214040.

The product of its digits is 31352832, while the sum is 62.

The spelling of 28226983679 in words is "twenty-eight billion, two hundred twenty-six million, nine hundred eighty-three thousand, six hundred seventy-nine".