1940556 has 48 divisors (see below), whose sum is σ = 4838400. Its totient is φ = 604032.

The previous prime is 1940551. The next prime is 1940557. The reversal of 1940556 is 6550491.

It is not an unprimeable number, because it can be changed into a prime (1940551) 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, 21760 + ... + 21848.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2^1940556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1940556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2419200).

1940556 is an abundant number, since it is smaller than the sum of its proper divisors (2897844).

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

1940556 is a wasteful number, since it uses less digits than its factorization.

1940556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1940556 is about 1393.0384057879. The cubic root of 1940556 is about 124.7312840813.

The spelling of 1940556 in words is "one million, nine hundred forty thousand, five hundred fifty-six".