72346945 has 8 divisors (see below), whose sum is σ = 94708800. Its totient is φ = 52615920.

The previous prime is 72346933. The next prime is 72346949. The reversal of 72346945 is 54964327.

It is a happy number.

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

It is not a de Polignac number, because 72346945 - 2⁵ = 72346913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72346898 and 72346907.

It is not an unprimeable number, because it can be changed into a prime (72346949) 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, 657645 + ... + 657754.

It is an arithmetic number, because the mean of its divisors is an integer number (11838600).

Almost surely, 2^72346945 is an apocalyptic number.

It is an amenable number.

72346945 is a deficient number, since it is larger than the sum of its proper divisors (22361855).

72346945 is a wasteful number, since it uses less digits than its factorization.

72346945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315415.

The product of its digits is 181440, while the sum is 40.

The square root of 72346945 is about 8505.7007353892. The cubic root of 72346945 is about 416.6839114640.

The spelling of 72346945 in words is "seventy-two million, three hundred forty-six thousand, nine hundred forty-five".