13222678 has 16 divisors (see below), whose sum is σ = 23399424. Its totient is φ = 5483880.

The previous prime is 13222669. The next prime is 13222687. The reversal of 13222678 is 87622231.

It is an interprime number because it is at equal distance from previous prime (13222669) and next prime (13222687).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14800 + ... + 15667.

It is an arithmetic number, because the mean of its divisors is an integer number (1462464).

Almost surely, 2^13222678 is an apocalyptic number.

13222678 is a deficient number, since it is larger than the sum of its proper divisors (10176746).

13222678 is a wasteful number, since it uses less digits than its factorization.

13222678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30507.

The product of its digits is 8064, while the sum is 31.

The square root of 13222678 is about 3636.3000426257. The cubic root of 13222678 is about 236.4684151644.

The spelling of 13222678 in words is "thirteen million, two hundred twenty-two thousand, six hundred seventy-eight".