28616227 has 4 divisors (see below), whose sum is σ = 28641256. Its totient is φ = 28591200.

The previous prime is 28616213. The next prime is 28616267. The reversal of 28616227 is 72261682.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28616227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28616192 and 28616201.

It is not an unprimeable number, because it can be changed into a prime (28616267) 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, 10713 + ... + 13114.

It is an arithmetic number, because the mean of its divisors is an integer number (7160314).

Almost surely, 2^28616227 is an apocalyptic number.

28616227 is a deficient number, since it is larger than the sum of its proper divisors (25029).

28616227 is a wasteful number, since it uses less digits than its factorization.

28616227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25028.

The product of its digits is 16128, while the sum is 34.

The square root of 28616227 is about 5349.4137061925. The cubic root of 28616227 is about 305.8704044896.

The spelling of 28616227 in words is "twenty-eight million, six hundred sixteen thousand, two hundred twenty-seven".