75491432 has 8 divisors (see below), whose sum is σ = 141546450. Its totient is φ = 37745712.

The previous prime is 75491431. The next prime is 75491443. The reversal of 75491432 is 23419457.

It can be written as a sum of positive squares in only one way, i.e., 75099556 + 391876 = 8666^2 + 626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 75491392 and 75491401.

It is not an unprimeable number, because it can be changed into a prime (75491431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4718207 + ... + 4718222.

Almost surely, 2^75491432 is an apocalyptic number.

It is an amenable number.

75491432 is a deficient number, since it is larger than the sum of its proper divisors (66055018).

75491432 is a wasteful number, since it uses less digits than its factorization.

75491432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9436435 (or 9436431 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 75491432 is about 8688.5805515055. The cubic root of 75491432 is about 422.6354166022.

The spelling of 75491432 in words is "seventy-five million, four hundred ninety-one thousand, four hundred thirty-two".