28127254 has 4 divisors (see below), whose sum is σ = 42190884. Its totient is φ = 14063626.

The previous prime is 28127251. The next prime is 28127263. The reversal of 28127254 is 45272182.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45272182 = 2 ⋅22636091.

It is a super-2 number, since 2×28127254² = 1582284835161032, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28127251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7031812 + ... + 7031815.

It is an arithmetic number, because the mean of its divisors is an integer number (10547721).

Almost surely, 2^28127254 is an apocalyptic number.

28127254 is a deficient number, since it is larger than the sum of its proper divisors (14063630).

28127254 is a wasteful number, since it uses less digits than its factorization.

28127254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14063629.

The product of its digits is 8960, while the sum is 31.

The square root of 28127254 is about 5303.5133637995. The cubic root of 28127254 is about 304.1182235814.

The spelling of 28127254 in words is "twenty-eight million, one hundred twenty-seven thousand, two hundred fifty-four".