166272750 has 384 divisors, whose sum is σ = 588736512. Its totient is φ = 34214400.

The previous prime is 166272721. The next prime is 166272751. The reversal of 166272750 is 57272661.

166272750 is a `hidden beast` number, since 1 + 6 + 627 + 27 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166272751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7229239 + ... + 7229261.

It is an arithmetic number, because the mean of its divisors is an integer number (1533168).

Almost surely, 2^166272750 is an apocalyptic number.

166272750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166272750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294368256).

166272750 is an abundant number, since it is smaller than the sum of its proper divisors (422463762).

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

166272750 is a wasteful number, since it uses less digits than its factorization.

166272750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 166272750 is about 12894.6791352092. The cubic root of 166272750 is about 549.8873047340.

The spelling of 166272750 in words is "one hundred sixty-six million, two hundred seventy-two thousand, seven hundred fifty".