166224320 has 56 divisors (see below), whose sum is σ = 401781264. Its totient is φ = 65488896.

The previous prime is 166224319. The next prime is 166224347. The reversal of 166224320 is 23422661.

It is a self number, because there is not a number n which added to its sum of digits gives 166224320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17564 + ... + 25316.

Almost surely, 2^166224320 is an apocalyptic number.

166224320 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 166224320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200890632).

166224320 is an abundant number, since it is smaller than the sum of its proper divisors (235556944).

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

166224320 is an equidigital number, since it uses as much as digits as its factorization.

166224320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7837 (or 7827 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 166224320 is about 12892.8010920824. The cubic root of 166224320 is about 549.8339112822.

Adding to 166224320 its reverse (23422661), we get a palindrome (189646981).

The spelling of 166224320 in words is "one hundred sixty-six million, two hundred twenty-four thousand, three hundred twenty".