72757918 has 8 divisors (see below), whose sum is σ = 109768248. Its totient is φ = 36168504.

The previous prime is 72757907. The next prime is 72757921. The reversal of 72757918 is 81975727.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104796 + ... + 105487.

It is an arithmetic number, because the mean of its divisors is an integer number (13721031).

Almost surely, 2^72757918 is an apocalyptic number.

72757918 is a deficient number, since it is larger than the sum of its proper divisors (37010330).

72757918 is a wasteful number, since it uses less digits than its factorization.

72757918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210458.

The product of its digits is 246960, while the sum is 46.

The square root of 72757918 is about 8529.8252033673. The cubic root of 72757918 is about 417.4714250107.

The spelling of 72757918 in words is "seventy-two million, seven hundred fifty-seven thousand, nine hundred eighteen".