28099118427 has 16 divisors (see below), whose sum is σ = 38010642432. Its totient is φ = 18462124800.

The previous prime is 28099118417. The next prime is 28099118431. The reversal of 28099118427 is 72481199082.

It is a happy number.

It is not a de Polignac number, because 28099118427 - 2¹⁵ = 28099085659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28099118427.

It is not an unprimeable number, because it can be changed into a prime (28099118407) 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, 186678 + ... + 301739.

It is an arithmetic number, because the mean of its divisors is an integer number (2375665152).

Almost surely, 2^28099118427 is an apocalyptic number.

28099118427 is a deficient number, since it is larger than the sum of its proper divisors (9911524005).

28099118427 is a wasteful number, since it uses less digits than its factorization.

28099118427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488698.

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 28099118427 in words is "twenty-eight billion, ninety-nine million, one hundred eighteen thousand, four hundred twenty-seven".