28177113 has 4 divisors (see below), whose sum is σ = 37569488. Its totient is φ = 18784740.

The previous prime is 28177099. The next prime is 28177129. The reversal of 28177113 is 31177182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28177113 - 2⁶ = 28177049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28177153) 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, 4696183 + ... + 4696188.

It is an arithmetic number, because the mean of its divisors is an integer number (9392372).

Almost surely, 2^28177113 is an apocalyptic number.

It is an amenable number.

28177113 is a deficient number, since it is larger than the sum of its proper divisors (9392375).

28177113 is an equidigital number, since it uses as much as digits as its factorization.

28177113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9392374.

The product of its digits is 2352, while the sum is 30.

The square root of 28177113 is about 5308.2118458102. The cubic root of 28177113 is about 304.2978130984.

The spelling of 28177113 in words is "twenty-eight million, one hundred seventy-seven thousand, one hundred thirteen".