20161330 has 32 divisors (see below), whose sum is σ = 41658624. Its totient is φ = 6881856.

The previous prime is 20161327. The next prime is 20161343. The reversal of 20161330 is 3316102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20019 + ... + 21001.

It is an arithmetic number, because the mean of its divisors is an integer number (1301832).

Almost surely, 2^20161330 is an apocalyptic number.

20161330 is an abundant number, since it is smaller than the sum of its proper divisors (21497294).

20161330 is a wasteful number, since it uses less digits than its factorization.

20161330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 20161330 is about 4490.1369689576. The cubic root of 20161330 is about 272.1696695876.

Adding to 20161330 its reverse (3316102), we get a palindrome (23477432).

The spelling of 20161330 in words is "twenty million, one hundred sixty-one thousand, three hundred thirty".