91241400 has 96 divisors (see below), whose sum is σ = 289825200. Its totient is φ = 23731200.

The previous prime is 91241389. The next prime is 91241413. The reversal of 91241400 is 414219.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22746 + ... + 26454.

Almost surely, 2^91241400 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 91241400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144912600).

91241400 is an abundant number, since it is smaller than the sum of its proper divisors (198583800).

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

91241400 is a wasteful number, since it uses less digits than its factorization.

91241400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769 (or 3760 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 91241400 is about 9552.0364320913. The cubic root of 91241400 is about 450.1915234129.

Adding to 91241400 its reverse (414219), we get a palindrome (91655619).

The spelling of 91241400 in words is "ninety-one million, two hundred forty-one thousand, four hundred".