72945318 has 8 divisors (see below), whose sum is σ = 145890648. Its totient is φ = 24315104.

The previous prime is 72945311. The next prime is 72945319. The reversal of 72945318 is 81354927.

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

72945318 is an admirable number.

It is a super-2 number, since 2×72945318² = 10642038836242248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72945311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6078771 + ... + 6078782.

It is an arithmetic number, because the mean of its divisors is an integer number (18236331).

Almost surely, 2^72945318 is an apocalyptic number.

72945318 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.

72945318 is a wasteful number, since it uses less digits than its factorization.

72945318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12157558.

The product of its digits is 60480, while the sum is 39.

The square root of 72945318 is about 8540.8031238286. The cubic root of 72945318 is about 417.8295398608.

The spelling of 72945318 in words is "seventy-two million, nine hundred forty-five thousand, three hundred eighteen".