72145266 has 8 divisors (see below), whose sum is σ = 144290544. Its totient is φ = 24048420.

The previous prime is 72145253. The next prime is 72145289. The reversal of 72145266 is 66254127.

It is a sphenic number, since it is the product of 3 distinct primes.

72145266 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6012100 + ... + 6012111.

It is an arithmetic number, because the mean of its divisors is an integer number (18036318).

Almost surely, 2^72145266 is an apocalyptic number.

72145266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72145266 is a wasteful number, since it uses less digits than its factorization.

72145266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12024216.

The product of its digits is 20160, while the sum is 33.

The square root of 72145266 is about 8493.8369421599. The cubic root of 72145266 is about 416.2963594895.

The spelling of 72145266 in words is "seventy-two million, one hundred forty-five thousand, two hundred sixty-six".