28323797 has 2 divisors, whose sum is σ = 28323798. Its totient is φ = 28323796.

The previous prime is 28323767. The next prime is 28323803. The reversal of 28323797 is 79732382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24690961 + 3632836 = 4969^2 + 1906^2 .

It is a cyclic number.

It is not a de Polignac number, because 28323797 - 2¹² = 28319701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28323727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14161898 + 14161899.

It is an arithmetic number, because the mean of its divisors is an integer number (14161899).

Almost surely, 2^28323797 is an apocalyptic number.

It is an amenable number.

28323797 is a deficient number, since it is larger than the sum of its proper divisors (1).

28323797 is an equidigital number, since it uses as much as digits as its factorization.

28323797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 28323797 is about 5322.0106162991. The cubic root of 28323797 is about 304.8249358163.

The spelling of 28323797 in words is "twenty-eight million, three hundred twenty-three thousand, seven hundred ninety-seven".