13788216 has 48 divisors (see below), whose sum is σ = 40218360. Its totient is φ = 4242240.

The previous prime is 13788199. The next prime is 13788221. The reversal of 13788216 is 61288731.

It is a super-2 number, since 2×13788216² = 380229800925312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6430 + ... + 8301.

Almost surely, 2^13788216 is an apocalyptic number.

It is an amenable number.

13788216 is an abundant number, since it is smaller than the sum of its proper divisors (26430144).

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

13788216 is a wasteful number, since it uses less digits than its factorization.

13788216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14756 (or 14749 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 13788216 is about 3713.2487123811. The cubic root of 13788216 is about 239.7927377280.

The spelling of 13788216 in words is "thirteen million, seven hundred eighty-eight thousand, two hundred sixteen".