16388055 has 32 divisors (see below), whose sum is σ = 29315520. Its totient is φ = 8686080.

The previous prime is 16388039. The next prime is 16388059. The reversal of 16388055 is 55088361.

It is not a de Polignac number, because 16388055 - 2⁴ = 16388039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16388059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31195 + ... + 31715.

It is an arithmetic number, because the mean of its divisors is an integer number (916110).

Almost surely, 2^16388055 is an apocalyptic number.

16388055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16388055 is a deficient number, since it is larger than the sum of its proper divisors (12927465).

16388055 is a wasteful number, since it uses less digits than its factorization.

16388055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 16388055 is about 4048.2162738668. The cubic root of 16388055 is about 254.0051200737.

The spelling of 16388055 in words is "sixteen million, three hundred eighty-eight thousand, fifty-five".