28926043081 has 16 divisors (see below), whose sum is σ = 32704995456. Its totient is φ = 25383321216.

The previous prime is 28926043079. The next prime is 28926043109. The reversal of 28926043081 is 18034062982.

It is a cyclic number.

It is not a de Polignac number, because 28926043081 - 2¹ = 28926043079 is a prime.

It is a super-2 number, since 2×28926043081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28926043051) 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, 248020 + ... + 345493.

It is an arithmetic number, because the mean of its divisors is an integer number (2044062216).

Almost surely, 2^28926043081 is an apocalyptic number.

It is an amenable number.

28926043081 is a deficient number, since it is larger than the sum of its proper divisors (3778952375).

28926043081 is a wasteful number, since it uses less digits than its factorization.

28926043081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593712.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 28926043081 in words is "twenty-eight billion, nine hundred twenty-six million, forty-three thousand, eighty-one".