13422278 has 16 divisors (see below), whose sum is σ = 20826960. Its totient is φ = 6483456.

The previous prime is 13422263. The next prime is 13422281. The reversal of 13422278 is 87222431.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13422278.

It is a congruent number.

It is an unprimeable number.

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, 7538 + ... + 9146.

It is an arithmetic number, because the mean of its divisors is an integer number (1301685).

Almost surely, 2^13422278 is an apocalyptic number.

13422278 is a deficient number, since it is larger than the sum of its proper divisors (7404682).

13422278 is a wasteful number, since it uses less digits than its factorization.

13422278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751.

The product of its digits is 5376, while the sum is 29.

The square root of 13422278 is about 3663.6427227556. The cubic root of 13422278 is about 237.6523299771.

The spelling of 13422278 in words is "thirteen million, four hundred twenty-two thousand, two hundred seventy-eight".