91243600 has 60 divisors (see below), whose sum is σ = 250536544. Its totient is φ = 31282560.

The previous prime is 91243597. The next prime is 91243609. The reversal of 91243600 is 634219.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91243609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13494 + ... + 19093.

Almost surely, 2^91243600 is an apocalyptic number.

It is an amenable number.

91243600 is an abundant number, since it is smaller than the sum of its proper divisors (159292944).

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

91243600 is a wasteful number, since it uses less digits than its factorization.

91243600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32612 (or 32601 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 91243600 is about 9552.1515900869. The cubic root of 91243600 is about 450.1951417024.

Adding to 91243600 its reverse (634219), we get a palindrome (91877819).

The spelling of 91243600 in words is "ninety-one million, two hundred forty-three thousand, six hundred".