1940340 has 48 divisors (see below), whose sum is σ = 5519808. Its totient is φ = 509184.

The previous prime is 1940339. The next prime is 1940371. The reversal of 1940340 is 430491.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4159 + ... + 4601.

It is an arithmetic number, because the mean of its divisors is an integer number (114996).

2^1940340 is an apocalyptic number.

1940340 is a gapful number since it is divisible by the number (10) 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 1940340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2759904).

1940340 is an abundant number, since it is smaller than the sum of its proper divisors (3579468).

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

1940340 is a wasteful number, since it uses less digits than its factorization.

1940340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1940340 is about 1392.9608752582. The cubic root of 1940340 is about 124.7266560336.

The spelling of 1940340 in words is "one million, nine hundred forty thousand, three hundred forty".