28073498217 has 16 divisors (see below), whose sum is σ = 39083793408. Its totient is φ = 17890476560.

The previous prime is 28073498143. The next prime is 28073498249. The reversal of 28073498217 is 71289437082.

It is a cyclic number.

It is not a de Polignac number, because 28073498217 - 2¹⁴ = 28073481833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28073498217.

It is not an unprimeable number, because it can be changed into a prime (28073498017) 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, 21093 + ... + 237890.

It is an arithmetic number, because the mean of its divisors is an integer number (2442737088).

Almost surely, 2^28073498217 is an apocalyptic number.

It is an amenable number.

28073498217 is a deficient number, since it is larger than the sum of its proper divisors (11010295191).

28073498217 is a wasteful number, since it uses less digits than its factorization.

28073498217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260580.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 28073498217 in words is "twenty-eight billion, seventy-three million, four hundred ninety-eight thousand, two hundred seventeen".