13409616 has 80 divisors (see below), whose sum is σ = 38301120. Its totient is φ = 4008960.

The previous prime is 13409603. The next prime is 13409633. The reversal of 13409616 is 61690431.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 57436 + ... + 57668.

It is an arithmetic number, because the mean of its divisors is an integer number (478764).

Almost surely, 2^13409616 is an apocalyptic number.

13409616 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 13409616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19150560).

13409616 is an abundant number, since it is smaller than the sum of its proper divisors (24891504).

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

13409616 is a wasteful number, since it uses less digits than its factorization.

13409616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13409616 is about 3661.9142535018. The cubic root of 13409616 is about 237.5775761354.

The spelling of 13409616 in words is "thirteen million, four hundred nine thousand, six hundred sixteen".