2081340 has 72 divisors (see below), whose sum is σ = 6534528. Its totient is φ = 535680.

The previous prime is 2081323. The next prime is 2081351. The reversal of 2081340 is 431802.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5394 + ... + 5766.

2^2081340 is an apocalyptic number.

2081340 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 2081340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3267264).

2081340 is an abundant number, since it is smaller than the sum of its proper divisors (4453188).

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

2081340 is a wasteful number, since it uses less digits than its factorization.

2081340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2081340 is about 1442.6849968028. The cubic root of 2081340 is about 127.6774921304.

The spelling of 2081340 in words is "two million, eighty-one thousand, three hundred forty".