7278879 has 8 divisors (see below), whose sum is σ = 10127232. Its totient is φ = 4641560.

The previous prime is 7278857. The next prime is 7278883. The reversal of 7278879 is 9788727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7278879 - 2⁵ = 7278847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7278829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52677 + ... + 52814.

It is an arithmetic number, because the mean of its divisors is an integer number (1265904).

Almost surely, 2^7278879 is an apocalyptic number.

7278879 is a deficient number, since it is larger than the sum of its proper divisors (2848353).

7278879 is a wasteful number, since it uses less digits than its factorization.

7278879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105517.

The product of its digits is 395136, while the sum is 48.

The square root of 7278879 is about 2697.9397695279. The cubic root of 7278879 is about 193.8004732879.

The spelling of 7278879 in words is "seven million, two hundred seventy-eight thousand, eight hundred seventy-nine".