13220045 has 8 divisors (see below), whose sum is σ = 15953760. Its totient is φ = 10516240.

The previous prime is 13220041. The next prime is 13220047. The reversal of 13220045 is 54002231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13220045 - 2² = 13220041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220041) 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 7 ways as a sum of consecutive naturals, for example, 6491 + ... + 8280.

It is an arithmetic number, because the mean of its divisors is an integer number (1994220).

Almost surely, 2^13220045 is an apocalyptic number.

It is an amenable number.

13220045 is a deficient number, since it is larger than the sum of its proper divisors (2733715).

13220045 is a wasteful number, since it uses less digits than its factorization.

13220045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14955.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13220045 is about 3635.9379807692. The cubic root of 13220045 is about 236.4527183273.

Adding to 13220045 its reverse (54002231), we get a palindrome (67222276).

The spelling of 13220045 in words is "thirteen million, two hundred twenty thousand, forty-five".