75147432 has 64 divisors (see below), whose sum is σ = 198912000. Its totient is φ = 23592384.

The previous prime is 75147427. The next prime is 75147433. The reversal of 75147432 is 23474157.

It is a junction number, because it is equal to n+sod(n) for n = 75147393 and 75147402.

It is not an unprimeable number, because it can be changed into a prime (75147433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101319 + ... + 102057.

It is an arithmetic number, because the mean of its divisors is an integer number (3108000).

Almost surely, 2^75147432 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 75147432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99456000).

75147432 is an abundant number, since it is smaller than the sum of its proper divisors (123764568).

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

75147432 is a wasteful number, since it uses less digits than its factorization.

75147432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 986 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 75147432 is about 8668.7618493070. The cubic root of 75147432 is about 421.9924828142.

The spelling of 75147432 in words is "seventy-five million, one hundred forty-seven thousand, four hundred thirty-two".