13655216 has 40 divisors (see below), whose sum is σ = 28507104. Its totient is φ = 6312960.

The previous prime is 13655207. The next prime is 13655231. The reversal of 13655216 is 61255631.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16181 + ... + 17003.

Almost surely, 2^13655216 is an apocalyptic number.

13655216 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 13655216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14253552).

13655216 is an abundant number, since it is smaller than the sum of its proper divisors (14851888).

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

13655216 is a wasteful number, since it uses less digits than its factorization.

13655216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 903 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 13655216 is about 3695.2964698384. The cubic root of 13655216 is about 239.0192383106.

The spelling of 13655216 in words is "thirteen million, six hundred fifty-five thousand, two hundred sixteen".