13143622 has 4 divisors (see below), whose sum is σ = 19715436. Its totient is φ = 6571810.

The previous prime is 13143619. The next prime is 13143661. The reversal of 13143622 is 22634131.

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

It is a junction number, because it is equal to n+sod(n) for n = 13143593 and 13143602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3285904 + ... + 3285907.

It is an arithmetic number, because the mean of its divisors is an integer number (4928859).

Almost surely, 2^13143622 is an apocalyptic number.

13143622 is a deficient number, since it is larger than the sum of its proper divisors (6571814).

13143622 is an equidigital number, since it uses as much as digits as its factorization.

13143622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571813.

The product of its digits is 864, while the sum is 22.

The square root of 13143622 is about 3625.4133557430. The cubic root of 13143622 is about 235.9962055313.

Adding to 13143622 its reverse (22634131), we get a palindrome (35777753).

It can be divided in two parts, 13143 and 622, that multiplied together give a triangular number (8174946 = T₄₀₄₃).

The spelling of 13143622 in words is "thirteen million, one hundred forty-three thousand, six hundred twenty-two".