891241224 has 32 divisors (see below), whose sum is σ = 2304936000. Its totient is φ = 286836032.

The previous prime is 891241193. The next prime is 891241229. The reversal of 891241224 is 422142198.

It is not an unprimeable number, because it can be changed into a prime (891241229) by changing a digit.

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, 639564 + ... + 640955.

It is an arithmetic number, because the mean of its divisors is an integer number (72029250).

Almost surely, 2^891241224 is an apocalyptic number.

It is an amenable number.

891241224 is an abundant number, since it is smaller than the sum of its proper divisors (1413694776).

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

891241224 is a wasteful number, since it uses less digits than its factorization.

891241224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280557 (or 1280553 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 891241224 is about 29853.6634937825. The cubic root of 891241224 is about 962.3471300253.

The spelling of 891241224 in words is "eight hundred ninety-one million, two hundred forty-one thousand, two hundred twenty-four".