89276728981 has 16 divisors (see below), whose sum is σ = 103197846528. Its totient is φ = 76330163200.

The previous prime is 89276728949. The next prime is 89276728987. The reversal of 89276728981 is 18982767298.

It is not a de Polignac number, because 89276728981 - 2⁵ = 89276728949 is a prime.

It is a super-2 number, since 2×89276728981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89276728987) 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, 79116 + ... + 429898.

It is an arithmetic number, because the mean of its divisors is an integer number (6449865408).

Almost surely, 2^89276728981 is an apocalyptic number.

It is an amenable number.

89276728981 is a deficient number, since it is larger than the sum of its proper divisors (13921117547).

89276728981 is a wasteful number, since it uses less digits than its factorization.

89276728981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352172.

The product of its digits is 48771072, while the sum is 67.

The spelling of 89276728981 in words is "eighty-nine billion, two hundred seventy-six million, seven hundred twenty-eight thousand, nine hundred eighty-one".