166500628 has 72 divisors (see below), whose sum is σ = 355971840. Its totient is φ = 67858560.

The previous prime is 166500623. The next prime is 166500643. The reversal of 166500628 is 826005661.

It is a junction number, because it is equal to n+sod(n) for n = 166500593 and 166500602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166500623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 406888 + ... + 407296.

Almost surely, 2^166500628 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 166500628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177985920).

166500628 is an abundant number, since it is smaller than the sum of its proper divisors (189471212).

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

166500628 is a wasteful number, since it uses less digits than its factorization.

166500628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 166500628 is about 12903.5122350467. The cubic root of 166500628 is about 550.1383982293.

The spelling of 166500628 in words is "one hundred sixty-six million, five hundred thousand, six hundred twenty-eight".