91871468 has 48 divisors (see below), whose sum is σ = 185290560. Its totient is φ = 39481344.

The previous prime is 91871467. The next prime is 91871471. The reversal of 91871468 is 86417819.

It is not an unprimeable number, because it can be changed into a prime (91871467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90548 + ... + 91556.

It is an arithmetic number, because the mean of its divisors is an integer number (3860220).

Almost surely, 2^91871468 is an apocalyptic number.

It is an amenable number.

91871468 is an abundant number, since it is smaller than the sum of its proper divisors (93419092).

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

91871468 is a wasteful number, since it uses less digits than its factorization.

91871468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1144 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 91871468 is about 9584.9605111341. The cubic root of 91871468 is about 451.2254139044.

The spelling of 91871468 in words is "ninety-one million, eight hundred seventy-one thousand, four hundred sixty-eight".