28498898017 has 4 divisors (see below), whose sum is σ = 28518540336. Its totient is φ = 28479255700.

The previous prime is 28498897979. The next prime is 28498898023. The reversal of 28498898017 is 71089889482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28498898017 - 2²³ = 28490509409 is a prime.

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 28498898017.

It is not an unprimeable number, because it can be changed into a prime (28498898717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9818983 + ... + 9821884.

It is an arithmetic number, because the mean of its divisors is an integer number (7129635084).

Almost surely, 2^28498898017 is an apocalyptic number.

It is an amenable number.

28498898017 is a deficient number, since it is larger than the sum of its proper divisors (19642319).

28498898017 is a wasteful number, since it uses less digits than its factorization.

28498898017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19642318.

The product of its (nonzero) digits is 18579456, while the sum is 64.

The spelling of 28498898017 in words is "twenty-eight billion, four hundred ninety-eight million, eight hundred ninety-eight thousand, seventeen".