166282440 has 128 divisors (see below), whose sum is σ = 542712960. Its totient is φ = 40587264.

The previous prime is 166282427. The next prime is 166282447. The reversal of 166282440 is 44282661.

It is not an unprimeable number, because it can be changed into a prime (166282447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74379 + ... + 76581.

It is an arithmetic number, because the mean of its divisors is an integer number (4239945).

Almost surely, 2^166282440 is an apocalyptic number.

166282440 is a gapful number since it is divisible by the number (10) 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 166282440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271356480).

166282440 is an abundant number, since it is smaller than the sum of its proper divisors (376430520).

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

166282440 is a wasteful number, since it uses less digits than its factorization.

166282440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271 (or 2267 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 166282440 is about 12895.0548661105. The cubic root of 166282440 is about 549.8979865895.

The spelling of 166282440 in words is "one hundred sixty-six million, two hundred eighty-two thousand, four hundred forty".