16345856 has 36 divisors (see below), whose sum is σ = 33149592. Its totient is φ = 8042496.

The previous prime is 16345853. The next prime is 16345859. The reversal of 16345856 is 65854361.

It is an interprime number because it is at equal distance from previous prime (16345853) and next prime (16345859).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16345853) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16676 + ... + 17628.

It is an arithmetic number, because the mean of its divisors is an integer number (920822).

Almost surely, 2^16345856 is an apocalyptic number.

16345856 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 16345856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16574796).

16345856 is an abundant number, since it is smaller than the sum of its proper divisors (16803736).

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

16345856 is an frugal number, since it uses more digits than its factorization.

16345856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036 (or 1022 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 16345856 is about 4043.0008656937. Note that the first 3 decimals coincide. The cubic root of 16345856 is about 253.7869128599.

The spelling of 16345856 in words is "sixteen million, three hundred forty-five thousand, eight hundred fifty-six".