91563432 has 32 divisors (see below), whose sum is σ = 240957600. Its totient is φ = 28914624.

The previous prime is 91563421. The next prime is 91563443. The reversal of 91563432 is 23436519.

It is an interprime number because it is at equal distance from previous prime (91563421) and next prime (91563443).

It is a junction number, because it is equal to n+sod(n) for n = 91563393 and 91563402.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 99943 + ... + 100854.

It is an arithmetic number, because the mean of its divisors is an integer number (7529925).

Almost surely, 2^91563432 is an apocalyptic number.

It is an amenable number.

91563432 is an abundant number, since it is smaller than the sum of its proper divisors (149394168).

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

91563432 is a wasteful number, since it uses less digits than its factorization.

91563432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200825 (or 200821 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 91563432 is about 9568.8783041692. The cubic root of 91563432 is about 450.7205444069.

The spelling of 91563432 in words is "ninety-one million, five hundred sixty-three thousand, four hundred thirty-two".