28791379 has 2 divisors, whose sum is σ = 28791380. Its totient is φ = 28791378.

The previous prime is 28791361. The next prime is 28791397. The reversal of 28791379 is 97319782.

It is a happy number.

Together with next prime (28791397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (28791361) and next prime (28791397).

It is a cyclic number.

It is not a de Polignac number, because 28791379 - 2¹¹ = 28789331 is a prime.

It is not a weakly prime, because it can be changed into another prime (28791359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14395689 + 14395690.

It is an arithmetic number, because the mean of its divisors is an integer number (14395690).

Almost surely, 2^28791379 is an apocalyptic number.

28791379 is a deficient number, since it is larger than the sum of its proper divisors (1).

28791379 is an equidigital number, since it uses as much as digits as its factorization.

28791379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 28791379 is about 5365.7598716305. The cubic root of 28791379 is about 306.4931849347.

The spelling of 28791379 in words is "twenty-eight million, seven hundred ninety-one thousand, three hundred seventy-nine".