1938040 has 32 divisors (see below), whose sum is σ = 4697280. Its totient is φ = 715392.

The previous prime is 1938011. The next prime is 1938067. The reversal of 1938040 is 408391.

It is a junction number, because it is equal to n+sod(n) for n = 1937996 and 1938014.

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 7 ways as a sum of consecutive naturals, for example, 1344 + ... + 2383.

It is an arithmetic number, because the mean of its divisors is an integer number (146790).

2^1938040 is an apocalyptic number.

1938040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1938040 is an abundant number, since it is smaller than the sum of its proper divisors (2759240).

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

1938040 is a wasteful number, since it uses less digits than its factorization.

1938040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751 (or 3747 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1938040 is about 1392.1350509200. The cubic root of 1938040 is about 124.6773545827.

The spelling of 1938040 in words is "one million, nine hundred thirty-eight thousand, forty".