13444620 has 144 divisors (see below), whose sum is σ = 46539360. Its totient is φ = 2881536.

The previous prime is 13444619. The next prime is 13444621. The reversal of 13444620 is 2644431.

It is an interprime number because it is at equal distance from previous prime (13444619) and next prime (13444621).

It is not an unprimeable number, because it can be changed into a prime (13444621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49846 + ... + 50114.

It is an arithmetic number, because the mean of its divisors is an integer number (323190).

Almost surely, 2^13444620 is an apocalyptic number.

13444620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13444620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23269680).

13444620 is an abundant number, since it is smaller than the sum of its proper divisors (33094740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13444620 is a wasteful number, since it uses less digits than its factorization.

13444620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 13444620 is about 3666.6906059825. The cubic root of 13444620 is about 237.7841179651.

The spelling of 13444620 in words is "thirteen million, four hundred forty-four thousand, six hundred twenty".