28073399 has 2 divisors, whose sum is σ = 28073400. Its totient is φ = 28073398.

The previous prime is 28073389. The next prime is 28073447. The reversal of 28073399 is 99337082.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28073399 is a prime.

It is a Sophie Germain 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 (28073369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14036699 + 14036700.

It is an arithmetic number, because the mean of its divisors is an integer number (14036700).

Almost surely, 2^28073399 is an apocalyptic number.

28073399 is a deficient number, since it is larger than the sum of its proper divisors (1).

28073399 is an equidigital number, since it uses as much as digits as its factorization.

28073399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 28073399 is about 5298.4336364628. The cubic root of 28073399 is about 303.9240020957.

The spelling of 28073399 in words is "twenty-eight million, seventy-three thousand, three hundred ninety-nine".