16145320 has 32 divisors (see below), whose sum is σ = 37312200. Its totient is φ = 6283008.

The previous prime is 16145317. The next prime is 16145321. The reversal of 16145320 is 2354161.

It can be written as a sum of positive squares in 4 ways, for example, as 13972644 + 2172676 = 3738^2 + 1474^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16145291 and 16145300.

It is not an unprimeable number, because it can be changed into a prime (16145321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3975 + ... + 6934.

Almost surely, 2^16145320 is an apocalyptic number.

16145320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16145320 is an abundant number, since it is smaller than the sum of its proper divisors (21166880).

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

16145320 is a wasteful number, since it uses less digits than its factorization.

16145320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10957 (or 10953 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16145320 is about 4018.1239403483. The cubic root of 16145320 is about 252.7447941327.

Adding to 16145320 its reverse (2354161), we get a palindrome (18499481).

The spelling of 16145320 in words is "sixteen million, one hundred forty-five thousand, three hundred twenty".