166544120 has 64 divisors (see below), whose sum is σ = 396144000. Its totient is φ = 62840448.

The previous prime is 166544113. The next prime is 166544137. The reversal of 166544120 is 21445661.

It is a congruent number.

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, 318179 + ... + 318701.

It is an arithmetic number, because the mean of its divisors is an integer number (6189750).

Almost surely, 2^166544120 is an apocalyptic number.

166544120 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 166544120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198072000).

166544120 is an abundant number, since it is smaller than the sum of its proper divisors (229599880).

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

166544120 is a wasteful number, since it uses less digits than its factorization.

166544120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 166544120 is about 12905.1974025971. The cubic root of 166544120 is about 550.1862950181.

Adding to 166544120 its reverse (21445661), we get a palindrome (187989781).

The spelling of 166544120 in words is "one hundred sixty-six million, five hundred forty-four thousand, one hundred twenty".