28366104031 has 4 divisors (see below), whose sum is σ = 28458502072. Its totient is φ = 28273705992.

The previous prime is 28366104007. The next prime is 28366104047. The reversal of 28366104031 is 13040166382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28366104031 - 2²³ = 28357715423 is a prime.

It is a super-2 number, since 2×28366104031² (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 (28366104061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46198560 + ... + 46199173.

It is an arithmetic number, because the mean of its divisors is an integer number (7114625518).

Almost surely, 2^28366104031 is an apocalyptic number.

28366104031 is a deficient number, since it is larger than the sum of its proper divisors (92398041).

28366104031 is an equidigital number, since it uses as much as digits as its factorization.

28366104031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92398040.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 28366104031 in words is "twenty-eight billion, three hundred sixty-six million, one hundred four thousand, thirty-one".