16231680 has 108 divisors (see below), whose sum is σ = 56199780. Its totient is φ = 4325376.

The previous prime is 16231679. The next prime is 16231687. The reversal of 16231680 is 8613261.

16231680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2214144 + 14017536 = 1488^2 + 3744^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16231687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10816 + ... + 12224.

Almost surely, 2^16231680 is an apocalyptic number.

16231680 is a gapful number since it is divisible by the number (10) 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 16231680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28099890).

16231680 is an abundant number, since it is smaller than the sum of its proper divisors (39968100).

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

16231680 is a wasteful number, since it uses less digits than its factorization.

16231680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436 (or 1419 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 16231680 is about 4028.8559170067. The cubic root of 16231680 is about 253.1946301355.

The spelling of 16231680 in words is "sixteen million, two hundred thirty-one thousand, six hundred eighty".