28879843 has 2 divisors, whose sum is σ = 28879844. Its totient is φ = 28879842.

The previous prime is 28879831. The next prime is 28879847. The reversal of 28879843 is 34897882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28879843 - 2¹³ = 28871651 is a prime.

It is not a weakly prime, because it can be changed into another prime (28879847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14439921 + 14439922.

It is an arithmetic number, because the mean of its divisors is an integer number (14439922).

Almost surely, 2^28879843 is an apocalyptic number.

28879843 is a deficient number, since it is larger than the sum of its proper divisors (1).

28879843 is an equidigital number, since it uses as much as digits as its factorization.

28879843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 49.

The square root of 28879843 is about 5373.9969296605. The cubic root of 28879843 is about 306.8067729104.

The spelling of 28879843 in words is "twenty-eight million, eight hundred seventy-nine thousand, eight hundred forty-three".