28216627 has 2 divisors, whose sum is σ = 28216628. Its totient is φ = 28216626.

The previous prime is 28216613. The next prime is 28216631. The reversal of 28216627 is 72661282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28216627 - 2⁷ = 28216499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28216592 and 28216601.

It is not a weakly prime, because it can be changed into another prime (28216687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14108313 + 14108314.

It is an arithmetic number, because the mean of its divisors is an integer number (14108314).

Almost surely, 2^28216627 is an apocalyptic number.

28216627 is a deficient number, since it is larger than the sum of its proper divisors (1).

28216627 is an equidigital number, since it uses as much as digits as its factorization.

28216627 is an evil number, because the sum of its binary digits is even.

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

The square root of 28216627 is about 5311.9325108665. The cubic root of 28216627 is about 304.4399900436.

The spelling of 28216627 in words is "twenty-eight million, two hundred sixteen thousand, six hundred twenty-seven".