28451127 has 4 divisors (see below), whose sum is σ = 37934840. Its totient is φ = 18967416.

The previous prime is 28451119. The next prime is 28451147. The reversal of 28451127 is 72115482.

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

It is not a de Polignac number, because 28451127 - 2³ = 28451119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28451094 and 28451103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28451147) 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, 4741852 + ... + 4741857.

It is an arithmetic number, because the mean of its divisors is an integer number (9483710).

Almost surely, 2^28451127 is an apocalyptic number.

28451127 is a deficient number, since it is larger than the sum of its proper divisors (9483713).

28451127 is an equidigital number, since it uses as much as digits as its factorization.

28451127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9483712.

The product of its digits is 4480, while the sum is 30.

The square root of 28451127 is about 5333.9597861251. The cubic root of 28451127 is about 305.2810345274.

The spelling of 28451127 in words is "twenty-eight million, four hundred fifty-one thousand, one hundred twenty-seven".