13122538 has 32 divisors (see below), whose sum is σ = 24494400. Its totient is φ = 5180160.

The previous prime is 13122533. The next prime is 13122539. The reversal of 13122538 is 83522131.

It is a super-2 number, since 2×13122538² = 344402007122888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13122533) 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 15 ways as a sum of consecutive naturals, for example, 3513 + ... + 6211.

It is an arithmetic number, because the mean of its divisors is an integer number (765450).

Almost surely, 2^13122538 is an apocalyptic number.

13122538 is a deficient number, since it is larger than the sum of its proper divisors (11371862).

13122538 is a wasteful number, since it uses less digits than its factorization.

13122538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742.

The product of its digits is 1440, while the sum is 25.

The square root of 13122538 is about 3622.5043823300. The cubic root of 13122538 is about 235.8699489347.

Adding to 13122538 its reverse (83522131), we get a palindrome (96644669).

The spelling of 13122538 in words is "thirteen million, one hundred twenty-two thousand, five hundred thirty-eight".