166128284 has 48 divisors (see below), whose sum is σ = 353062080. Its totient is φ = 66769920.

The previous prime is 166128253. The next prime is 166128293. The reversal of 166128284 is 482821661.

It is a happy number.

It is a congruent number.

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, 199982 + ... + 200810.

It is an arithmetic number, because the mean of its divisors is an integer number (7355460).

Almost surely, 2^166128284 is an apocalyptic number.

166128284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166128284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176531040).

166128284 is an abundant number, since it is smaller than the sum of its proper divisors (186933796).

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

166128284 is a wasteful number, since it uses less digits than its factorization.

166128284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1276 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 166128284 is about 12889.0761499806. The cubic root of 166128284 is about 549.7280021471.

The spelling of 166128284 in words is "one hundred sixty-six million, one hundred twenty-eight thousand, two hundred eighty-four".