28264091 has 2 divisors, whose sum is σ = 28264092. Its totient is φ = 28264090.

The previous prime is 28264087. The next prime is 28264097. The reversal of 28264091 is 19046282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28264091 - 2² = 28264087 is a prime.

It is not a weakly prime, because it can be changed into another prime (28264097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14132045 + 14132046.

It is an arithmetic number, because the mean of its divisors is an integer number (14132046).

Almost surely, 2^28264091 is an apocalyptic number.

28264091 is a deficient number, since it is larger than the sum of its proper divisors (1).

28264091 is an equidigital number, since it uses as much as digits as its factorization.

28264091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28264091 is about 5316.3983108868. The cubic root of 28264091 is about 304.6105968402.

The spelling of 28264091 in words is "twenty-eight million, two hundred sixty-four thousand, ninety-one".