13122645 has 32 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 6666240.

The previous prime is 13122631. The next prime is 13122647. The reversal of 13122645 is 54622131.

It is not a de Polignac number, because 13122645 - 2⁹ = 13122133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122647) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 42040 + ... + 42350.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 2^13122645 is an apocalyptic number.

13122645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13122645 is a deficient number, since it is larger than the sum of its proper divisors (8892075).

13122645 is a wasteful number, since it uses less digits than its factorization.

13122645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its digits is 1440, while the sum is 24.

The square root of 13122645 is about 3622.5191510881. The cubic root of 13122645 is about 235.8705900204.

Adding to 13122645 its reverse (54622131), we get a palindrome (67744776).

The spelling of 13122645 in words is "thirteen million, one hundred twenty-two thousand, six hundred forty-five".