72134472 has 32 divisors (see below), whose sum is σ = 184176000. Its totient is φ = 23532864.

The previous prime is 72134459. The next prime is 72134477. The reversal of 72134472 is 27443127.

72134472 is nontrivially palindromic in base 11.

It is not an unprimeable number, because it can be changed into a prime (72134477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30847 + ... + 33102.

It is an arithmetic number, because the mean of its divisors is an integer number (5755500).

Almost surely, 2^72134472 is an apocalyptic number.

It is an amenable number.

72134472 is an abundant number, since it is smaller than the sum of its proper divisors (112041528).

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

72134472 is a wasteful number, since it uses less digits than its factorization.

72134472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64005 (or 64001 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 72134472 is about 8493.2015165072. The cubic root of 72134472 is about 416.2755970876.

Adding to 72134472 its reverse (27443127), we get a palindrome (99577599).

The spelling of 72134472 in words is "seventy-two million, one hundred thirty-four thousand, four hundred seventy-two".