28492769 has 2 divisors, whose sum is σ = 28492770. Its totient is φ = 28492768.

The previous prime is 28492757. The next prime is 28492771. The reversal of 28492769 is 96729482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16851025 + 11641744 = 4105^2 + 3412^2 .

It is a cyclic number.

It is not a de Polignac number, because 28492769 - 2¹⁶ = 28427233 is a prime.

It is a super-2 number, since 2×28492769² = 1623675770574722, which contains 22 as substring.

Together with 28492771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28497769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14246384 + 14246385.

It is an arithmetic number, because the mean of its divisors is an integer number (14246385).

Almost surely, 2^28492769 is an apocalyptic number.

It is an amenable number.

28492769 is a deficient number, since it is larger than the sum of its proper divisors (1).

28492769 is an equidigital number, since it uses as much as digits as its factorization.

28492769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 28492769 is about 5337.8618378523. The cubic root of 28492769 is about 305.4299016909.

The spelling of 28492769 in words is "twenty-eight million, four hundred ninety-two thousand, seven hundred sixty-nine".