166072284 has 72 divisors (see below), whose sum is σ = 480972128. Its totient is φ = 47329920.

The previous prime is 166072273. The next prime is 166072307. The reversal of 166072284 is 482270661.

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 23 ways as a sum of consecutive naturals, for example, 166074 + ... + 167070.

Almost surely, 2^166072284 is an apocalyptic number.

166072284 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 166072284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240486064).

166072284 is an abundant number, since it is smaller than the sum of its proper divisors (314899844).

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

166072284 is a wasteful number, since it uses less digits than its factorization.

166072284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1670 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 166072284 is about 12886.9035846475. The cubic root of 166072284 is about 549.6662261366. Note that the first 3 decimals are identical.

The spelling of 166072284 in words is "one hundred sixty-six million, seventy-two thousand, two hundred eighty-four".