72026166 has 16 divisors (see below), whose sum is σ = 144335088. Its totient is φ = 23961600.

The previous prime is 72026147. The next prime is 72026167. The reversal of 72026166 is 66162027.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72026167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8395 + ... + 14646.

It is an arithmetic number, because the mean of its divisors is an integer number (9020943).

Almost surely, 2^72026166 is an apocalyptic number.

72026166 is an abundant number, since it is smaller than the sum of its proper divisors (72308922).

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

72026166 is a wasteful number, since it uses less digits than its factorization.

72026166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23567.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 72026166 is about 8486.8230805172. The cubic root of 72026166 is about 416.0671543153.

The spelling of 72026166 in words is "seventy-two million, twenty-six thousand, one hundred sixty-six".