28882391 has 2 divisors, whose sum is σ = 28882392. Its totient is φ = 28882390.

The previous prime is 28882379. The next prime is 28882417. The reversal of 28882391 is 19328882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28882391 - 2¹⁸ = 28620247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28882331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14441195 + 14441196.

It is an arithmetic number, because the mean of its divisors is an integer number (14441196).

Almost surely, 2^28882391 is an apocalyptic number.

28882391 is a deficient number, since it is larger than the sum of its proper divisors (1).

28882391 is an equidigital number, since it uses as much as digits as its factorization.

28882391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 41.

The square root of 28882391 is about 5374.2339919285. The cubic root of 28882391 is about 306.8157955895.

The spelling of 28882391 in words is "twenty-eight million, eight hundred eighty-two thousand, three hundred ninety-one".