1996884 has 18 divisors (see below), whose sum is σ = 5047770. Its totient is φ = 665616.

The previous prime is 1996879. The next prime is 1996901. The reversal of 1996884 is 4886991.

It can be written as a sum of positive squares in only one way, i.e., 1040400 + 956484 = 1020^2 + 978^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 27699 + ... + 27770.

2^1996884 is an apocalyptic number.

It is an amenable number.

1996884 is an abundant number, since it is smaller than the sum of its proper divisors (3050886).

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

1996884 is a wasteful number, since it uses less digits than its factorization.

1996884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55479 (or 55474 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1996884 is about 1413.1114605720. Note that the first 3 decimals coincide. The cubic root of 1996884 is about 125.9266390792.

The spelling of 1996884 in words is "one million, nine hundred ninety-six thousand, eight hundred eighty-four".