2291380 has 48 divisors (see below), whose sum is σ = 5927040. Its totient is φ = 724608.

The previous prime is 2291369. The next prime is 2291389. The reversal of 2291380 is 831922.

2291380 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

2291380 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291389) 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, 1191 + ... + 2449.

It is an arithmetic number, because the mean of its divisors is an integer number (123480).

2^2291380 is an apocalyptic number.

2291380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2963520).

2291380 is an abundant number, since it is smaller than the sum of its proper divisors (3635660).

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

2291380 is a wasteful number, since it uses less digits than its factorization.

2291380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2291380 is about 1513.7304912038. The cubic root of 2291380 is about 131.8355006251.

The spelling of 2291380 in words is "two million, two hundred ninety-one thousand, three hundred eighty".