72136166 has 16 divisors (see below), whose sum is σ = 112384800. Its totient is φ = 34684608.

The previous prime is 72136159. The next prime is 72136177. The reversal of 72136166 is 66163127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12890 + ... + 17618.

It is an arithmetic number, because the mean of its divisors is an integer number (7024050).

Almost surely, 2^72136166 is an apocalyptic number.

72136166 is a deficient number, since it is larger than the sum of its proper divisors (40248634).

72136166 is a wasteful number, since it uses less digits than its factorization.

72136166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5023.

The product of its digits is 9072, while the sum is 32.

The square root of 72136166 is about 8493.3012427442. The cubic root of 72136166 is about 416.2788556561.

The spelling of 72136166 in words is "seventy-two million, one hundred thirty-six thousand, one hundred sixty-six".