72097432 has 16 divisors (see below), whose sum is σ = 147472200. Its totient is φ = 32771520.

The previous prime is 72097397. The next prime is 72097439. The reversal of 72097432 is 23479027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72097439) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 409557 + ... + 409732.

Almost surely, 2^72097432 is an apocalyptic number.

It is an amenable number.

72097432 is an abundant number, since it is smaller than the sum of its proper divisors (75374768).

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

72097432 is a wasteful number, since it uses less digits than its factorization.

72097432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819306 (or 819302 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 72097432 is about 8491.0206689184. The cubic root of 72097432 is about 416.2043344048.

It can be divided in two parts, 7209 and 7432, that added together give a palindrome (14641).

The spelling of 72097432 in words is "seventy-two million, ninety-seven thousand, four hundred thirty-two".