28727267 has 2 divisors, whose sum is σ = 28727268. Its totient is φ = 28727266.

The previous prime is 28727249. The next prime is 28727287. The reversal of 28727267 is 76272782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28727267 - 2¹² = 28723171 is a prime.

It is not a weakly prime, because it can be changed into another prime (28727287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14363633 + 14363634.

It is an arithmetic number, because the mean of its divisors is an integer number (14363634).

Almost surely, 2^28727267 is an apocalyptic number.

28727267 is a deficient number, since it is larger than the sum of its proper divisors (1).

28727267 is an equidigital number, since it uses as much as digits as its factorization.

28727267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131712, while the sum is 41.

The square root of 28727267 is about 5359.7823649846. The cubic root of 28727267 is about 306.2655184695.

The spelling of 28727267 in words is "twenty-eight million, seven hundred twenty-seven thousand, two hundred sixty-seven".