1996340 has 12 divisors (see below), whose sum is σ = 4192356. Its totient is φ = 798528.

The previous prime is 1996333. The next prime is 1996343. The reversal of 1996340 is 436991.

It can be written as a sum of positive squares in 2 ways, for example, as 1024144 + 972196 = 1012^2 + 986^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1996297 and 1996306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49889 + ... + 49928.

It is an arithmetic number, because the mean of its divisors is an integer number (349363).

2^1996340 is an apocalyptic number.

1996340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1996340 is an abundant number, since it is smaller than the sum of its proper divisors (2196016).

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

1996340 is a wasteful number, since it uses less digits than its factorization.

1996340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99826 (or 99824 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1996340 is about 1412.9189644137. The cubic root of 1996340 is about 125.9152028761.

The spelling of 1996340 in words is "one million, nine hundred ninety-six thousand, three hundred forty".