28092919 has 2 divisors, whose sum is σ = 28092920. Its totient is φ = 28092918.

The previous prime is 28092917. The next prime is 28092923. The reversal of 28092919 is 91929082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28092919 - 2¹ = 28092917 is a prime.

It is a super-2 number, since 2×28092919² = 1578424195881122, which contains 22 as substring.

Together with 28092917, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28092917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14046459 + 14046460.

It is an arithmetic number, because the mean of its divisors is an integer number (14046460).

Almost surely, 2^28092919 is an apocalyptic number.

28092919 is a deficient number, since it is larger than the sum of its proper divisors (1).

28092919 is an equidigital number, since it uses as much as digits as its factorization.

28092919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 28092919 is about 5300.2753702048. The cubic root of 28092919 is about 303.9944272697.

The spelling of 28092919 in words is "twenty-eight million, ninety-two thousand, nine hundred nineteen".