1990344 has 32 divisors (see below), whose sum is σ = 5022720. Its totient is φ = 657216.

The previous prime is 1990337. The next prime is 1990361. The reversal of 1990344 is 4430991.

1990344 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1990344² = 7922938476672, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2722 + ... + 3374.

It is an arithmetic number, because the mean of its divisors is an integer number (156960).

2^1990344 is an apocalyptic number.

It is an amenable number.

1990344 is an abundant number, since it is smaller than the sum of its proper divisors (3032376).

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

1990344 is a wasteful number, since it uses less digits than its factorization.

1990344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1990344 is about 1410.7955202651. The cubic root of 1990344 is about 125.7890145034.

The spelling of 1990344 in words is "one million, nine hundred ninety thousand, three hundred forty-four".