28854690219 has 6 divisors (see below), whose sum is σ = 41678996996. Its totient is φ = 19236460140.

The previous prime is 28854690209. The next prime is 28854690299. The reversal of 28854690219 is 91209645882.

It is a happy number.

28854690219 is a `hidden beast` number, since 2 + 8 + 8 + 546 + 90 + 2 + 1 + 9 = 666.

It is not a de Polignac number, because 28854690219 - 2⁴ = 28854690203 is a prime.

It is a super-2 number, since 2×28854690219² (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 (28854690209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1603038337 + ... + 1603038354.

Almost surely, 2^28854690219 is an apocalyptic number.

28854690219 is a deficient number, since it is larger than the sum of its proper divisors (12824306777).

28854690219 is a wasteful number, since it uses less digits than its factorization.

28854690219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206076697 (or 3206076694 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 28854690219 in words is "twenty-eight billion, eight hundred fifty-four million, six hundred ninety thousand, two hundred nineteen".