28479511779 has 8 divisors (see below), whose sum is σ = 38113845840. Its totient is φ = 18915759456.

The previous prime is 28479511757. The next prime is 28479511829. The reversal of 28479511779 is 97711597482.

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

It is not a de Polignac number, because 28479511779 - 2⁵ = 28479511747 is a prime.

It is a super-2 number, since 2×28479511779² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28479531779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17644492 + ... + 17646105.

It is an arithmetic number, because the mean of its divisors is an integer number (4764230730).

Almost surely, 2^28479511779 is an apocalyptic number.

28479511779 is a deficient number, since it is larger than the sum of its proper divisors (9634334061).

28479511779 is a wasteful number, since it uses less digits than its factorization.

28479511779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35290869.

The product of its digits is 8890560, while the sum is 60.

The spelling of 28479511779 in words is "twenty-eight billion, four hundred seventy-nine million, five hundred eleven thousand, seven hundred seventy-nine".