72126732 has 24 divisors (see below), whose sum is σ = 168750400. Its totient is φ = 23977296.

The previous prime is 72126713. The next prime is 72126737. The reversal of 72126732 is 23762127.

It is a self number, because there is not a number n which added to its sum of digits gives 72126732.

It is not an unprimeable number, because it can be changed into a prime (72126737) 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, 3382 + ... + 12477.

Almost surely, 2^72126732 is an apocalyptic number.

It is an amenable number.

72126732 is an abundant number, since it is smaller than the sum of its proper divisors (96623668).

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

72126732 is a wasteful number, since it uses less digits than its factorization.

72126732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16245 (or 16243 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 72126732 is about 8492.7458457203. The cubic root of 72126732 is about 416.2607078200.

Adding to 72126732 its reverse (23762127), we get a palindrome (95888859).

The spelling of 72126732 in words is "seventy-two million, one hundred twenty-six thousand, seven hundred thirty-two".