13078222 has 4 divisors (see below), whose sum is σ = 19617336. Its totient is φ = 6539110.

The previous prime is 13078193. The next prime is 13078229. The reversal of 13078222 is 22287031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22287031 = 13 ⋅1714387.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13078229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269554 + ... + 3269557.

It is an arithmetic number, because the mean of its divisors is an integer number (4904334).

Almost surely, 2^13078222 is an apocalyptic number.

13078222 is a deficient number, since it is larger than the sum of its proper divisors (6539114).

13078222 is an equidigital number, since it uses as much as digits as its factorization.

13078222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539113.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 13078222 is about 3616.3824465894. The cubic root of 13078222 is about 235.6041314157.

The spelling of 13078222 in words is "thirteen million, seventy-eight thousand, two hundred twenty-two".