28346239 has 2 divisors, whose sum is σ = 28346240. Its totient is φ = 28346238.

The previous prime is 28346221. The next prime is 28346251. The reversal of 28346239 is 93264382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28346239 - 2⁹ = 28345727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28346198 and 28346207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28346209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14173119 + 14173120.

It is an arithmetic number, because the mean of its divisors is an integer number (14173120).

Almost surely, 2^28346239 is an apocalyptic number.

28346239 is a deficient number, since it is larger than the sum of its proper divisors (1).

28346239 is an equidigital number, since it uses as much as digits as its factorization.

28346239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 28346239 is about 5324.1186125029. The cubic root of 28346239 is about 304.9054226150.

The spelling of 28346239 in words is "twenty-eight million, three hundred forty-six thousand, two hundred thirty-nine".