28127011 has 16 divisors (see below), whose sum is σ = 32860800. Its totient is φ = 23803200.

The previous prime is 28126997. The next prime is 28127023. The reversal of 28127011 is 11072182.

It is not a de Polignac number, because 28127011 - 2⁷ = 28126883 is a prime.

It is a super-2 number, since 2×28127011² = 1582257495588242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28127111) 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, 11191 + ... + 13471.

It is an arithmetic number, because the mean of its divisors is an integer number (2053800).

Almost surely, 2^28127011 is an apocalyptic number.

28127011 is a deficient number, since it is larger than the sum of its proper divisors (4733789).

28127011 is a wasteful number, since it uses less digits than its factorization.

28127011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 28127011 is about 5303.4904544083. The cubic root of 28127011 is about 304.1173477886.

Adding to 28127011 its reverse (11072182), we get a palindrome (39199193).

The spelling of 28127011 in words is "twenty-eight million, one hundred twenty-seven thousand, eleven".