16390120 has 16 divisors (see below), whose sum is σ = 36877860. Its totient is φ = 6556032.

The previous prime is 16390117. The next prime is 16390123. The reversal of 16390120 is 2109361.

It is an interprime number because it is at equal distance from previous prime (16390117) and next prime (16390123).

It can be written as a sum of positive squares in 2 ways, for example, as 16273156 + 116964 = 4034^2 + 342^2 .

It is a super-2 number, since 2×16390120² = 537272067228800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16390091 and 16390100.

It is not an unprimeable number, because it can be changed into a prime (16390123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204837 + ... + 204916.

Almost surely, 2^16390120 is an apocalyptic number.

16390120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16390120 is an abundant number, since it is smaller than the sum of its proper divisors (20487740).

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

16390120 is a wasteful number, since it uses less digits than its factorization.

16390120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409764 (or 409760 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 16390120 is about 4048.4713164354. The cubic root of 16390120 is about 254.0157883835.

Adding to 16390120 its reverse (2109361), we get a palindrome (18499481).

The spelling of 16390120 in words is "sixteen million, three hundred ninety thousand, one hundred twenty".