72816958 has 4 divisors (see below), whose sum is σ = 109225440. Its totient is φ = 36408478.

The previous prime is 72816937. The next prime is 72816973. The reversal of 72816958 is 85961827.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18204238 + ... + 18204241.

It is an arithmetic number, because the mean of its divisors is an integer number (27306360).

Almost surely, 2^72816958 is an apocalyptic number.

72816958 is a deficient number, since it is larger than the sum of its proper divisors (36408482).

72816958 is a wasteful number, since it uses less digits than its factorization.

72816958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36408481.

The product of its digits is 241920, while the sum is 46.

The square root of 72816958 is about 8533.2852993440. The cubic root of 72816958 is about 417.5843146673.

The spelling of 72816958 in words is "seventy-two million, eight hundred sixteen thousand, nine hundred fifty-eight".