28840583 has 2 divisors, whose sum is σ = 28840584. Its totient is φ = 28840582.

The previous prime is 28840561. The next prime is 28840601. The reversal of 28840583 is 38504882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28840583 - 2²⁴ = 12063367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28840523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14420291 + 14420292.

It is an arithmetic number, because the mean of its divisors is an integer number (14420292).

Almost surely, 2^28840583 is an apocalyptic number.

28840583 is a deficient number, since it is larger than the sum of its proper divisors (1).

28840583 is an equidigital number, since it uses as much as digits as its factorization.

28840583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 28840583 is about 5370.3429127012. The cubic root of 28840583 is about 306.6676828626.

The spelling of 28840583 in words is "twenty-eight million, eight hundred forty thousand, five hundred eighty-three".