28020274219 has 12 divisors (see below), whose sum is σ = 32783433264. Its totient is φ = 23878541904.

The previous prime is 28020274211. The next prime is 28020274241. The reversal of 28020274219 is 91247202082.

It is not a de Polignac number, because 28020274219 - 2³ = 28020274211 is a prime.

It is a super-2 number, since 2×28020274219² (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 (28020274211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1644247 + ... + 1661200.

It is an arithmetic number, because the mean of its divisors is an integer number (2731952772).

Almost surely, 2^28020274219 is an apocalyptic number.

28020274219 is a deficient number, since it is larger than the sum of its proper divisors (4763159045).

28020274219 is a wasteful number, since it uses less digits than its factorization.

28020274219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305634 (or 3305627 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 28020274219 in words is "twenty-eight billion, twenty million, two hundred seventy-four thousand, two hundred nineteen".