166723480 has 288 divisors, whose sum is σ = 518540400. Its totient is φ = 47900160.

The previous prime is 166723463. The next prime is 166723483. The reversal of 166723480 is 84327661.

166723480 is nontrivially palindromic in base 3.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166723483) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4506022 + ... + 4506058.

Almost surely, 2^166723480 is an apocalyptic number.

166723480 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 166723480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259270200).

166723480 is an abundant number, since it is smaller than the sum of its proper divisors (351816920).

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

166723480 is a wasteful number, since it uses less digits than its factorization.

166723480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 166723480 is about 12912.1446708128. The cubic root of 166723480 is about 550.3837322097.

The spelling of 166723480 in words is "one hundred sixty-six million, seven hundred twenty-three thousand, four hundred eighty".