1990896 has 80 divisors (see below), whose sum is σ = 5654400. Its totient is φ = 601344.

The previous prime is 1990889. The next prime is 1990907. The reversal of 1990896 is 6980991.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33715 + ... + 33773.

It is an arithmetic number, because the mean of its divisors is an integer number (70680).

2^1990896 is an apocalyptic number.

1990896 is a gapful number since it is divisible by the number (16) 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 1990896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2827200).

1990896 is an abundant number, since it is smaller than the sum of its proper divisors (3663504).

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

1990896 is a wasteful number, since it uses less digits than its factorization.

1990896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 1990896 is about 1410.9911410069. The cubic root of 1990896 is about 125.8006421614.

The spelling of 1990896 in words is "one million, nine hundred ninety thousand, eight hundred ninety-six".