891420 has 48 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 233536.

The previous prime is 891409. The next prime is 891421. The reversal of 891420 is 24198.

891420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891421) by changing a digit.

891420 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 15 ways as a sum of consecutive naturals, for example, 4891 + ... + 5069.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2⁸⁹¹⁴²⁰ 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 891420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080).

891420 is an abundant number, since it is smaller than the sum of its proper divisors (1648740).

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

891420 is a wasteful number, since it uses less digits than its factorization.

891420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 891420 is about 944.1504117459. The cubic root of 891420 is about 96.2411472152.

The spelling of 891420 in words is "eight hundred ninety-one thousand, four hundred twenty".