28110772231 has 8 divisors (see below), whose sum is σ = 28798938000. Its totient is φ = 27422727360.

The previous prime is 28110772223. The next prime is 28110772271. The reversal of 28110772231 is 13227701182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28110772231 - 2³ = 28110772223 is a prime.

It is a super-2 number, since 2×28110772231² (a number of 22 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 (28110772211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598480 + ... + 643738.

It is an arithmetic number, because the mean of its divisors is an integer number (3599867250).

Almost surely, 2^28110772231 is an apocalyptic number.

28110772231 is a deficient number, since it is larger than the sum of its proper divisors (688165769).

28110772231 is a wasteful number, since it uses less digits than its factorization.

28110772231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60449.

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 28110772231 in words is "twenty-eight billion, one hundred ten million, seven hundred seventy-two thousand, two hundred thirty-one".