28617227 has 2 divisors, whose sum is σ = 28617228. Its totient is φ = 28617226.

The previous prime is 28617223. The next prime is 28617269. The reversal of 28617227 is 72271682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28617227 - 2² = 28617223 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28617223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14308613 + 14308614.

It is an arithmetic number, because the mean of its divisors is an integer number (14308614).

Almost surely, 2^28617227 is an apocalyptic number.

28617227 is a deficient number, since it is larger than the sum of its proper divisors (1).

28617227 is an equidigital number, since it uses as much as digits as its factorization.

28617227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 28617227 is about 5349.5071735628. The cubic root of 28617227 is about 305.8739673497.

The spelling of 28617227 in words is "twenty-eight million, six hundred seventeen thousand, two hundred twenty-seven".