28080379 has 4 divisors (see below), whose sum is σ = 29732184. Its totient is φ = 26428576.

The previous prime is 28080361. The next prime is 28080397. The reversal of 28080379 is 97308082.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28080361) and next prime (28080397).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28080379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28080359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825877 + ... + 825910.

It is an arithmetic number, because the mean of its divisors is an integer number (7433046).

Almost surely, 2^28080379 is an apocalyptic number.

28080379 is a deficient number, since it is larger than the sum of its proper divisors (1651805).

28080379 is a wasteful number, since it uses less digits than its factorization.

28080379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651804.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 28080379 is about 5299.0922807590. The cubic root of 28080379 is about 303.9491886164.

The spelling of 28080379 in words is "twenty-eight million, eighty thousand, three hundred seventy-nine".