72432232 has 8 divisors (see below), whose sum is σ = 135810450. Its totient is φ = 36216112.

The previous prime is 72432203. The next prime is 72432247. The reversal of 72432232 is 23223427.

It can be written as a sum of positive squares in only one way, i.e., 41139396 + 31292836 = 6414^2 + 5594^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 72432197 and 72432206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4527007 + ... + 4527022.

Almost surely, 2^72432232 is an apocalyptic number.

It is an amenable number.

72432232 is a deficient number, since it is larger than the sum of its proper divisors (63378218).

72432232 is a wasteful number, since it uses less digits than its factorization.

72432232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9054035 (or 9054031 counting only the distinct ones).

The product of its digits is 4032, while the sum is 25.

The square root of 72432232 is about 8510.7127786103. The cubic root of 72432232 is about 416.8475846512.

Adding to 72432232 its reverse (23223427), we get a palindrome (95655659).

The spelling of 72432232 in words is "seventy-two million, four hundred thirty-two thousand, two hundred thirty-two".