166031628 has 48 divisors (see below), whose sum is σ = 449374464. Its totient is φ = 46728000.

The previous prime is 166031611. The next prime is 166031647. The reversal of 166031628 is 826130661.

166031628 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-3 number, since 3×166031628³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9123 + ... + 20378.

It is an arithmetic number, because the mean of its divisors is an integer number (9361968).

Almost surely, 2^166031628 is an apocalyptic number.

It is an amenable number.

166031628 is an abundant number, since it is smaller than the sum of its proper divisors (283342836).

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

166031628 is a wasteful number, since it uses less digits than its factorization.

166031628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29582 (or 29580 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 166031628 is about 12885.3260727077. The cubic root of 166031628 is about 549.6213680515.

The spelling of 166031628 in words is "one hundred sixty-six million, thirty-one thousand, six hundred twenty-eight".