28028505326 has 16 divisors (see below), whose sum is σ = 42334261200. Its totient is φ = 13917126720.

The previous prime is 28028505317. The next prime is 28028505347. The reversal of 28028505326 is 62350582082.

It is a super-2 number, since 2×28028505326² (a number of 22 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, 1986890 + ... + 2000946.

It is an arithmetic number, because the mean of its divisors is an integer number (2645891325).

Almost surely, 2^28028505326 is an apocalyptic number.

28028505326 is a deficient number, since it is larger than the sum of its proper divisors (14305755874).

28028505326 is a wasteful number, since it uses less digits than its factorization.

28028505326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20899.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 28028505326 in words is "twenty-eight billion, twenty-eight million, five hundred five thousand, three hundred twenty-six".