28236379 has 2 divisors, whose sum is σ = 28236380. Its totient is φ = 28236378.

The previous prime is 28236367. The next prime is 28236389. The reversal of 28236379 is 97363282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28236379 - 2⁵ = 28236347 is a prime.

It is not a weakly prime, because it can be changed into another prime (28236349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14118189 + 14118190.

It is an arithmetic number, because the mean of its divisors is an integer number (14118190).

Almost surely, 2^28236379 is an apocalyptic number.

28236379 is a deficient number, since it is larger than the sum of its proper divisors (1).

28236379 is an equidigital number, since it uses as much as digits as its factorization.

28236379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 28236379 is about 5313.7913959808. The cubic root of 28236379 is about 304.5110107707.

The spelling of 28236379 in words is "twenty-eight million, two hundred thirty-six thousand, three hundred seventy-nine".