16208864 has 36 divisors (see below), whose sum is σ = 36606024. Its totient is φ = 6920832.

The previous prime is 16208861. The next prime is 16208867. The reversal of 16208864 is 46880261.

It is an interprime number because it is at equal distance from previous prime (16208861) and next prime (16208867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16208861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60122 + ... + 60390.

It is an arithmetic number, because the mean of its divisors is an integer number (1016834).

Almost surely, 2^16208864 is an apocalyptic number.

16208864 is a gapful number since it is divisible by the number (14) 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 16208864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18303012).

16208864 is an abundant number, since it is smaller than the sum of its proper divisors (20397160).

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

16208864 is an frugal number, since it uses more digits than its factorization.

16208864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 16208864 is about 4026.0233481688. The cubic root of 16208864 is about 253.0759404794.

The spelling of 16208864 in words is "sixteen million, two hundred eight thousand, eight hundred sixty-four".