72320758 has 8 divisors (see below), whose sum is σ = 108717840. Its totient is φ = 36081480.

The previous prime is 72320753. The next prime is 72320789. The reversal of 72320758 is 85702327.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72320753) 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, 38298 + ... + 40141.

It is an arithmetic number, because the mean of its divisors is an integer number (13589730).

Almost surely, 2^72320758 is an apocalyptic number.

72320758 is a deficient number, since it is larger than the sum of its proper divisors (36397082).

72320758 is a wasteful number, since it uses less digits than its factorization.

72320758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78902.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 72320758 is about 8504.1612167221. The cubic root of 72320758 is about 416.6336305185.

The spelling of 72320758 in words is "seventy-two million, three hundred twenty thousand, seven hundred fifty-eight".