16330320 has 120 divisors (see below), whose sum is σ = 56416776. Its totient is φ = 4230144.

The previous prime is 16330289. The next prime is 16330331. The reversal of 16330320 is 2303361.

It is a happy number.

16330320 is a `hidden beast` number, since 1 + 633 + 0 + 32 + 0 = 666.

16330320 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 553536 + 15776784 = 744^2 + 3972^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 16330293 and 16330302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26334 + ... + 26946.

Almost surely, 2^16330320 is an apocalyptic number.

16330320 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 16330320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28208388).

16330320 is an abundant number, since it is smaller than the sum of its proper divisors (40086456).

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

16330320 is a wasteful number, since it uses less digits than its factorization.

16330320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 16330320 is about 4041.0790638145. The cubic root of 16330320 is about 253.7064830290.

Adding to 16330320 its reverse (2303361), we get a palindrome (18633681).

The spelling of 16330320 in words is "sixteen million, three hundred thirty thousand, three hundred twenty".