91745432 has 16 divisors (see below), whose sum is σ = 172310760. Its totient is φ = 45795904.

The previous prime is 91745431. The next prime is 91745441. The reversal of 91745432 is 23454719.

It is a junction number, because it is equal to n+sod(n) for n = 91745392 and 91745401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91745431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4358 + ... + 14229.

Almost surely, 2^91745432 is an apocalyptic number.

It is an amenable number.

91745432 is a deficient number, since it is larger than the sum of its proper divisors (80565328).

91745432 is a wasteful number, since it uses less digits than its factorization.

91745432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19210 (or 19206 counting only the distinct ones).

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

The square root of 91745432 is about 9578.3835797070. The cubic root of 91745432 is about 451.0189781313.

The spelling of 91745432 in words is "ninety-one million, seven hundred forty-five thousand, four hundred thirty-two".