72347258 has 8 divisors (see below), whose sum is σ = 109035840. Its totient is φ = 36001980.

The previous prime is 72347251. The next prime is 72347287. The reversal of 72347258 is 85274327.

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72347251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85298 + ... + 86141.

It is an arithmetic number, because the mean of its divisors is an integer number (13629480).

Almost surely, 2^72347258 is an apocalyptic number.

72347258 is a deficient number, since it is larger than the sum of its proper divisors (36688582).

72347258 is a wasteful number, since it uses less digits than its factorization.

72347258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171652.

The product of its digits is 94080, while the sum is 38.

The square root of 72347258 is about 8505.7191347940. The cubic root of 72347258 is about 416.6845123734.

The spelling of 72347258 in words is "seventy-two million, three hundred forty-seven thousand, two hundred fifty-eight".