166454720 has 56 divisors (see below), whose sum is σ = 405621744. Its totient is φ = 65028096.

The previous prime is 166454681. The next prime is 166454737. The reversal of 166454720 is 27454661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7712 + ... + 19808.

Almost surely, 2^166454720 is an apocalyptic number.

166454720 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 166454720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202810872).

166454720 is an abundant number, since it is smaller than the sum of its proper divisors (239167024).

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

166454720 is a wasteful number, since it uses less digits than its factorization.

166454720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12157 (or 12147 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 166454720 is about 12901.7332168976. The cubic root of 166454720 is about 550.0878317031.

The spelling of 166454720 in words is "one hundred sixty-six million, four hundred fifty-four thousand, seven hundred twenty".