166652388 has 72 divisors (see below), whose sum is σ = 502389888. Its totient is φ = 45543168.

The previous prime is 166652333. The next prime is 166652399. The reversal of 166652388 is 883256661.

166652388 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166652388² = 55546036852205088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8581 + ... + 20172.

Almost surely, 2^166652388 is an apocalyptic number.

166652388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166652388 is an abundant number, since it is smaller than the sum of its proper divisors (335737500).

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

166652388 is a wasteful number, since it uses less digits than its factorization.

166652388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28793 (or 28788 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 166652388 is about 12909.3914651311. The cubic root of 166652388 is about 550.3054919941.

The spelling of 166652388 in words is "one hundred sixty-six million, six hundred fifty-two thousand, three hundred eighty-eight".