166293128 has 32 divisors (see below), whose sum is σ = 326496960. Its totient is φ = 79252800.

The previous prime is 166293119. The next prime is 166293143. The reversal of 166293128 is 821392661.

It is a happy number.

166293128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 166293091 and 166293100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56903 + ... + 59753.

It is an arithmetic number, because the mean of its divisors is an integer number (10203030).

Almost surely, 2^166293128 is an apocalyptic number.

It is an amenable number.

166293128 is a deficient number, since it is larger than the sum of its proper divisors (160203832).

166293128 is a wasteful number, since it uses less digits than its factorization.

166293128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197 (or 3193 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 166293128 is about 12895.4692818835. The cubic root of 166293128 is about 549.9097681177.

The spelling of 166293128 in words is "one hundred sixty-six million, two hundred ninety-three thousand, one hundred twenty-eight".