1996940 has 48 divisors (see below), whose sum is σ = 4747680. Its totient is φ = 698880.

The previous prime is 1996937. The next prime is 1996949. The reversal of 1996940 is 496991.

It is a junction number, because it is equal to n+sod(n) for n = 1996894 and 1996903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6224 + ... + 6536.

It is an arithmetic number, because the mean of its divisors is an integer number (98910).

2^1996940 is an apocalyptic number.

1996940 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 1996940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2373840).

1996940 is an abundant number, since it is smaller than the sum of its proper divisors (2750740).

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

1996940 is a wasteful number, since it uses less digits than its factorization.

1996940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 1996940 is about 1413.1312748644. The cubic root of 1996940 is about 125.9278162175.

The spelling of 1996940 in words is "one million, nine hundred ninety-six thousand, nine hundred forty".