891480 has 128 divisors (see below), whose sum is σ = 3110400. Its totient is φ = 202752.

The previous prime is 891439. The next prime is 891481. The reversal of 891480 is 84198.

It is a happy number.

891480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 891480.

It is not an unprimeable number, because it can be changed into a prime (891481) by changing a digit.

891480 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38749 + ... + 38771.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2⁸⁹¹⁴⁸⁰ 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 891480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555200).

891480 is an abundant number, since it is smaller than the sum of its proper divisors (2218920).

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

891480 is a wasteful number, since it uses less digits than its factorization.

891480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 891480 is about 944.1821858095. The cubic root of 891480 is about 96.2433064441.

The spelling of 891480 in words is "eight hundred ninety-one thousand, four hundred eighty".