166352728 has 16 divisors (see below), whose sum is σ = 314369280. Its totient is φ = 82520928.

The previous prime is 166352653. The next prime is 166352731. The reversal of 166352728 is 827253661.

It is a super-2 number, since 2×166352728² = 55346460226083968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80851 + ... + 82882.

It is an arithmetic number, because the mean of its divisors is an integer number (19648080).

Almost surely, 2^166352728 is an apocalyptic number.

It is an amenable number.

166352728 is a deficient number, since it is larger than the sum of its proper divisors (148016552).

166352728 is a wasteful number, since it uses less digits than its factorization.

166352728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163866 (or 163862 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 166352728 is about 12897.7799640093. The cubic root of 166352728 is about 549.9754567560.

The spelling of 166352728 in words is "one hundred sixty-six million, three hundred fifty-two thousand, seven hundred twenty-eight".