166281828 has 48 divisors (see below), whose sum is σ = 412118784. Its totient is φ = 52001280.

The previous prime is 166281803. The next prime is 166281847. The reversal of 166281828 is 828182661.

It is a self number, because there is not a number n which added to its sum of digits gives 166281828.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73758 + ... + 75978.

It is an arithmetic number, because the mean of its divisors is an integer number (8585808).

Almost surely, 2^166281828 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 166281828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206059392).

166281828 is an abundant number, since it is smaller than the sum of its proper divisors (245836956).

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

166281828 is a wasteful number, since it uses less digits than its factorization.

166281828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612 (or 2610 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 166281828 is about 12895.0311360617. The cubic root of 166281828 is about 549.8973119582.

The spelling of 166281828 in words is "one hundred sixty-six million, two hundred eighty-one thousand, eight hundred twenty-eight".