166724448 has 144 divisors (see below), whose sum is σ = 497645568. Its totient is φ = 48787200.

The previous prime is 166724443. The next prime is 166724461. The reversal of 166724448 is 844427661.

It is a super-3 number, since 3×166724448³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166724443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359865 + ... + 360327.

It is an arithmetic number, because the mean of its divisors is an integer number (3455872).

Almost surely, 2^166724448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166724448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248822784).

166724448 is an abundant number, since it is smaller than the sum of its proper divisors (330921120).

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

166724448 is a wasteful number, since it uses less digits than its factorization.

166724448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 510 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 166724448 is about 12912.1821548490. The cubic root of 166724448 is about 550.3847973875.

The spelling of 166724448 in words is "one hundred sixty-six million, seven hundred twenty-four thousand, four hundred forty-eight".