166261480 has 128 divisors (see below), whose sum is σ = 486881280. Its totient is φ = 49547520.

The previous prime is 166261429. The next prime is 166261493. The reversal of 166261480 is 84162661.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69667 + ... + 72013.

It is an arithmetic number, because the mean of its divisors is an integer number (3803760).

Almost surely, 2^166261480 is an apocalyptic number.

166261480 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 166261480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243440640).

166261480 is an abundant number, since it is smaller than the sum of its proper divisors (320619800).

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

166261480 is a wasteful number, since it uses less digits than its factorization.

166261480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399 (or 2395 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 166261480 is about 12894.2421258483. The cubic root of 166261480 is about 549.8748806297.

The spelling of 166261480 in words is "one hundred sixty-six million, two hundred sixty-one thousand, four hundred eighty".