72192918 has 16 divisors (see below), whose sum is σ = 165012480. Its totient is φ = 20626536.

The previous prime is 72192917. The next prime is 72192947. The reversal of 72192918 is 81929127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72192917) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 859398 + ... + 859481.

It is an arithmetic number, because the mean of its divisors is an integer number (10313280).

Almost surely, 2^72192918 is an apocalyptic number.

72192918 is an abundant number, since it is smaller than the sum of its proper divisors (92819562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72192918 is a wasteful number, since it uses less digits than its factorization.

72192918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718891.

The product of its digits is 18144, while the sum is 39.

The square root of 72192918 is about 8496.6415718212. The cubic root of 72192918 is about 416.3879939990.

It can be divided in two parts, 721 and 92918, that added together give a palindrome (93639).

The spelling of 72192918 in words is "seventy-two million, one hundred ninety-two thousand, nine hundred eighteen".