28890779908598 has 16 divisors (see below), whose sum is σ = 43378791718176. Its totient is φ = 14431186458240.

The previous prime is 28890779908589. The next prime is 28890779908643. The reversal of 28890779908598 is 89580997709882.

It is a super-2 number, since 2×28890779908598² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14366990 + ... + 16253982.

It is an arithmetic number, because the mean of its divisors is an integer number (2711174482386).

Almost surely, 2^{28890779908598} is an apocalyptic number.

28890779908598 is a deficient number, since it is larger than the sum of its proper divisors (14488011809578).

28890779908598 is a wasteful number, since it uses less digits than its factorization.

28890779908598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894519.

The product of its (nonzero) digits is 13168189440, while the sum is 89.

The spelling of 28890779908598 in words is "twenty-eight trillion, eight hundred ninety billion, seven hundred seventy-nine million, nine hundred eight thousand, five hundred ninety-eight".