72132166 has 16 divisors (see below), whose sum is σ = 112695840. Its totient is φ = 34594560.

The previous prime is 72132157. The next prime is 72132187. The reversal of 72132166 is 66123127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1611 + ... + 12118.

It is an arithmetic number, because the mean of its divisors is an integer number (7043490).

Almost surely, 2^72132166 is an apocalyptic number.

72132166 is a deficient number, since it is larger than the sum of its proper divisors (40563674).

72132166 is a wasteful number, since it uses less digits than its factorization.

72132166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13839.

The product of its digits is 3024, while the sum is 28.

The square root of 72132166 is about 8493.0657597831. The cubic root of 72132166 is about 416.2711611976.

The spelling of 72132166 in words is "seventy-two million, one hundred thirty-two thousand, one hundred sixty-six".