72325232 has 80 divisors (see below), whose sum is σ = 170084352. Its totient is φ = 29134080.

The previous prime is 72325213. The next prime is 72325241. The reversal of 72325232 is 23252327.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128183 + ... + 128745.

Almost surely, 2^72325232 is an apocalyptic number.

72325232 is the 6944-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72325232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85042176).

72325232 is an abundant number, since it is smaller than the sum of its proper divisors (97759120).

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

72325232 is a wasteful number, since it uses less digits than its factorization.

72325232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 640 counting only the distinct ones).

The product of its digits is 5040, while the sum is 26.

The square root of 72325232 is about 8504.4242603483. The cubic root of 72325232 is about 416.6422217837.

Adding to 72325232 its reverse (23252327), we get a palindrome (95577559).

The spelling of 72325232 in words is "seventy-two million, three hundred twenty-five thousand, two hundred thirty-two".