28336654819 has 16 divisors (see below), whose sum is σ = 31045304160. Its totient is φ = 25650338560.

The previous prime is 28336654813. The next prime is 28336654837. The reversal of 28336654819 is 91845663382.

It is not a de Polignac number, because 28336654819 - 2³ = 28336654811 is a prime.

It is a super-2 number, since 2×28336654819² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28336654819.

It is not an unprimeable number, because it can be changed into a prime (28336654811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2634777 + ... + 2645509.

It is an arithmetic number, because the mean of its divisors is an integer number (1940331510).

Almost surely, 2^28336654819 is an apocalyptic number.

28336654819 is a deficient number, since it is larger than the sum of its proper divisors (2708649341).

28336654819 is a wasteful number, since it uses less digits than its factorization.

28336654819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11750.

The product of its digits is 7464960, while the sum is 55.

The spelling of 28336654819 in words is "twenty-eight billion, three hundred thirty-six million, six hundred fifty-four thousand, eight hundred nineteen".