75432432 has 80 divisors (see below), whose sum is σ = 207308160. Its totient is φ = 23567616.

The previous prime is 75432431. The next prime is 75432437. The reversal of 75432432 is 23423457.

It is a super-3 number, since 3×75432432³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75432432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75432431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97198 + ... + 97970.

It is an arithmetic number, because the mean of its divisors is an integer number (2591352).

Almost surely, 2^75432432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75432432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103654080).

75432432 is an abundant number, since it is smaller than the sum of its proper divisors (131875728).

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

75432432 is a wasteful number, since it uses less digits than its factorization.

75432432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 904 counting only the distinct ones).

The product of its digits is 20160, while the sum is 30.

The square root of 75432432 is about 8685.1846267077. The cubic root of 75432432 is about 422.5252849497.

Adding to 75432432 its reverse (23423457), we get a palindrome (98855889).

The spelling of 75432432 in words is "seventy-five million, four hundred thirty-two thousand, four hundred thirty-two".