72289346 has 8 divisors (see below), whose sum is σ = 108908220. Its totient is φ = 35986608.

The previous prime is 72289339. The next prime is 72289351. The reversal of 72289346 is 64398227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54184321 + 18105025 = 7361^2 + 4255^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78461 + ... + 79376.

Almost surely, 2^72289346 is an apocalyptic number.

72289346 is a deficient number, since it is larger than the sum of its proper divisors (36618874).

72289346 is a wasteful number, since it uses less digits than its factorization.

72289346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158068.

The product of its digits is 145152, while the sum is 41.

The square root of 72289346 is about 8502.3141555696. The cubic root of 72289346 is about 416.5733011783.

The spelling of 72289346 in words is "seventy-two million, two hundred eighty-nine thousand, three hundred forty-six".