28066328458 has 32 divisors (see below), whose sum is σ = 50666250240. Its totient is φ = 11390796720.

The previous prime is 28066328447. The next prime is 28066328491. The reversal of 28066328458 is 85482366082.

It is a super-2 number, since 2×28066328458² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690735 + ... + 730237.

It is an arithmetic number, because the mean of its divisors is an integer number (1583320320).

Almost surely, 2^28066328458 is an apocalyptic number.

28066328458 is a deficient number, since it is larger than the sum of its proper divisors (22599921782).

28066328458 is a wasteful number, since it uses less digits than its factorization.

28066328458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42202.

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 28066328458 in words is "twenty-eight billion, sixty-six million, three hundred twenty-eight thousand, four hundred fifty-eight".