1940564 has 12 divisors (see below), whose sum is σ = 3513300. Its totient is φ = 936768.

The previous prime is 1940563. The next prime is 1940573. The reversal of 1940564 is 4650491.

It can be written as a sum of positive squares in 2 ways, for example, as 1144900 + 795664 = 1070^2 + 892^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940563) 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 3 ways as a sum of consecutive naturals, for example, 8249 + ... + 8480.

It is an arithmetic number, because the mean of its divisors is an integer number (292775).

2^1940564 is an apocalyptic number.

It is an amenable number.

1940564 is a deficient number, since it is larger than the sum of its proper divisors (1572736).

1940564 is a wasteful number, since it uses less digits than its factorization.

1940564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16762 (or 16760 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1940564 is about 1393.0412772061. The cubic root of 1940564 is about 124.7314554839.

The spelling of 1940564 in words is "one million, nine hundred forty thousand, five hundred sixty-four".