166233320 has 64 divisors (see below), whose sum is σ = 409406400. Its totient is φ = 60244480.

The previous prime is 166233289. The next prime is 166233349. The reversal of 166233320 is 23332661.

It is a super-4 number, since 4×166233320⁴ (a number of 34 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166233320.

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, 205076 + ... + 205884.

It is an arithmetic number, because the mean of its divisors is an integer number (6396975).

Almost surely, 2^166233320 is an apocalyptic number.

166233320 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 166233320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204703200).

166233320 is an abundant number, since it is smaller than the sum of its proper divisors (243173080).

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

166233320 is a wasteful number, since it uses less digits than its factorization.

166233320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 166233320 is about 12893.1501193463. The cubic root of 166233320 is about 549.8438344508.

Adding to 166233320 its reverse (23332661), we get a palindrome (189565981).

The spelling of 166233320 in words is "one hundred sixty-six million, two hundred thirty-three thousand, three hundred twenty".