28692791 has 2 divisors, whose sum is σ = 28692792. Its totient is φ = 28692790.

The previous prime is 28692779. The next prime is 28692823. The reversal of 28692791 is 19729682.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28692791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28692751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14346395 + 14346396.

It is an arithmetic number, because the mean of its divisors is an integer number (14346396).

Almost surely, 2^28692791 is an apocalyptic number.

28692791 is a deficient number, since it is larger than the sum of its proper divisors (1).

28692791 is an equidigital number, since it uses as much as digits as its factorization.

28692791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 28692791 is about 5356.5652240965. The cubic root of 28692791 is about 306.1429515628.

The spelling of 28692791 in words is "twenty-eight million, six hundred ninety-two thousand, seven hundred ninety-one".