72822518 has 4 divisors (see below), whose sum is σ = 109233780. Its totient is φ = 36411258.

The previous prime is 72822481. The next prime is 72822527. The reversal of 72822518 is 81522827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81522827 = 2297 ⋅35491.

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, 18205628 + ... + 18205631.

It is an arithmetic number, because the mean of its divisors is an integer number (27308445).

Almost surely, 2^72822518 is an apocalyptic number.

72822518 is a deficient number, since it is larger than the sum of its proper divisors (36411262).

72822518 is a wasteful number, since it uses less digits than its factorization.

72822518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36411261.

The product of its digits is 17920, while the sum is 35.

The square root of 72822518 is about 8533.6110762092. The cubic root of 72822518 is about 417.5949427305.

The spelling of 72822518 in words is "seventy-two million, eight hundred twenty-two thousand, five hundred eighteen".