13445616 has 80 divisors (see below), whose sum is σ = 38211840. Its totient is φ = 4055040.

The previous prime is 13445587. The next prime is 13445629. The reversal of 13445616 is 61654431.

13445616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20656 + ... + 21296.

It is an arithmetic number, because the mean of its divisors is an integer number (477648).

Almost surely, 2^13445616 is an apocalyptic number.

13445616 is a gapful number since it is divisible by the number (16) 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 13445616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19105920).

13445616 is an abundant number, since it is smaller than the sum of its proper divisors (24766224).

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

13445616 is a wasteful number, since it uses less digits than its factorization.

13445616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 688 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 13445616 is about 3666.8264207622. The cubic root of 13445616 is about 237.7899896356.

The spelling of 13445616 in words is "thirteen million, four hundred forty-five thousand, six hundred sixteen".