166784472 has 24 divisors (see below), whose sum is σ = 451708140. Its totient is φ = 55594800.

The previous prime is 166784461. The next prime is 166784473. The reversal of 166784472 is 274487661.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166784473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1158154 + ... + 1158297.

Almost surely, 2^166784472 is an apocalyptic number.

166784472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166784472 is an abundant number, since it is smaller than the sum of its proper divisors (284923668).

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

166784472 is a wasteful number, since it uses less digits than its factorization.

166784472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316463 (or 2316456 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 166784472 is about 12914.5062623393. The cubic root of 166784472 is about 550.4508391582.

The spelling of 166784472 in words is "one hundred sixty-six million, seven hundred eighty-four thousand, four hundred seventy-two".