166238460 has 96 divisors (see below), whose sum is σ = 519993600. Its totient is φ = 44089920.

The previous prime is 166238441. The next prime is 166238489. The reversal of 166238460 is 64832661.

166238460 is a `hidden beast` number, since 166 + 2 + 38 + 460 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 113211 + ... + 114669.

It is an arithmetic number, because the mean of its divisors is an integer number (5416600).

Almost surely, 2^166238460 is an apocalyptic number.

166238460 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 166238460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259996800).

166238460 is an abundant number, since it is smaller than the sum of its proper divisors (353755140).

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

166238460 is a wasteful number, since it uses less digits than its factorization.

166238460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 166238460 is about 12893.3494484560. The cubic root of 166238460 is about 549.8495015220.

The spelling of 166238460 in words is "one hundred sixty-six million, two hundred thirty-eight thousand, four hundred sixty".