72432528 has 40 divisors (see below), whose sum is σ = 213849408. Its totient is φ = 20694912.

The previous prime is 72432439. The next prime is 72432533. The reversal of 72432528 is 82523427.

It is a super-2 number, since 2×72432528² = 10492942224941568, which contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 107451 + ... + 108122.

Almost surely, 2^72432528 is an apocalyptic number.

It is an amenable number.

72432528 is an abundant number, since it is smaller than the sum of its proper divisors (141416880).

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

72432528 is a wasteful number, since it uses less digits than its factorization.

72432528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215591 (or 215585 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 72432528 is about 8510.7301684403. The cubic root of 72432528 is about 416.8481524773.

The spelling of 72432528 in words is "seventy-two million, four hundred thirty-two thousand, five hundred twenty-eight".