72930118 has 4 divisors (see below), whose sum is σ = 109395180. Its totient is φ = 36465058.

The previous prime is 72930097. The next prime is 72930127. The reversal of 72930118 is 81103927.

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

It is a super-2 number, since 2×72930118² = 10637604222987848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72930118.

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, 18232528 + ... + 18232531.

It is an arithmetic number, because the mean of its divisors is an integer number (27348795).

Almost surely, 2^72930118 is an apocalyptic number.

72930118 is a deficient number, since it is larger than the sum of its proper divisors (36465062).

72930118 is a wasteful number, since it uses less digits than its factorization.

72930118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36465061.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 72930118 is about 8539.9132314093. The cubic root of 72930118 is about 417.8005160643.

The spelling of 72930118 in words is "seventy-two million, nine hundred thirty thousand, one hundred eighteen".