28110406271 has 4 divisors (see below), whose sum is σ = 29332597872. Its totient is φ = 26888214672.

The previous prime is 28110406231. The next prime is 28110406279. The reversal of 28110406271 is 17260401182.

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 28110406271 - 2¹⁴ = 28110389887 is a prime.

It is a super-2 number, since 2×28110406271² (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 (28110406279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611095766 + ... + 611095811.

It is an arithmetic number, because the mean of its divisors is an integer number (7333149468).

Almost surely, 2^28110406271 is an apocalyptic number.

28110406271 is a deficient number, since it is larger than the sum of its proper divisors (1222191601).

28110406271 is a wasteful number, since it uses less digits than its factorization.

28110406271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222191600.

The product of its (nonzero) digits is 5376, while the sum is 32.

The spelling of 28110406271 in words is "twenty-eight billion, one hundred ten million, four hundred six thousand, two hundred seventy-one".