72322115 has 8 divisors (see below), whose sum is σ = 86890128. Its totient is φ = 57788640.

The previous prime is 72322111. The next prime is 72322127. The reversal of 72322115 is 51122327.

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 72322115 - 2² = 72322111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72322111) 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, 3776 + ... + 12605.

It is an arithmetic number, because the mean of its divisors is an integer number (10861266).

Almost surely, 2^72322115 is an apocalyptic number.

72322115 is a deficient number, since it is larger than the sum of its proper divisors (14568013).

72322115 is a wasteful number, since it uses less digits than its factorization.

72322115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17269.

The product of its digits is 840, while the sum is 23.

The square root of 72322115 is about 8504.2410008184. The cubic root of 72322115 is about 416.6362363554.

The spelling of 72322115 in words is "seventy-two million, three hundred twenty-two thousand, one hundred fifteen".