28195379 has 2 divisors, whose sum is σ = 28195380. Its totient is φ = 28195378.

The previous prime is 28195351. The next prime is 28195381. The reversal of 28195379 is 97359182.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28195379 is a prime.

Together with 28195381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28195319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14097689 + 14097690.

It is an arithmetic number, because the mean of its divisors is an integer number (14097690).

Almost surely, 2^28195379 is an apocalyptic number.

28195379 is a deficient number, since it is larger than the sum of its proper divisors (1).

28195379 is an equidigital number, since it uses as much as digits as its factorization.

28195379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The square root of 28195379 is about 5309.9321087939. The cubic root of 28195379 is about 304.3635532521.

The spelling of 28195379 in words is "twenty-eight million, one hundred ninety-five thousand, three hundred seventy-nine".