13620441 has 4 divisors (see below), whose sum is σ = 18160592. Its totient is φ = 9080292.

The previous prime is 13620421. The next prime is 13620457. The reversal of 13620441 is 14402631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-13620441 is a prime.

It is a super-3 number, since 3×13620441³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13620421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2270071 + ... + 2270076.

It is an arithmetic number, because the mean of its divisors is an integer number (4540148).

Almost surely, 2^13620441 is an apocalyptic number.

It is an amenable number.

13620441 is a deficient number, since it is larger than the sum of its proper divisors (4540151).

13620441 is an equidigital number, since it uses as much as digits as its factorization.

13620441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540150.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13620441 is about 3690.5881645071. The cubic root of 13620441 is about 238.8161667071.

The spelling of 13620441 in words is "thirteen million, six hundred twenty thousand, four hundred forty-one".