1940540 has 48 divisors (see below), whose sum is σ = 4741632. Its totient is φ = 653376.

The previous prime is 1940537. The next prime is 1940551. The reversal of 1940540 is 450491.

It is a happy number.

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, 11537 + ... + 11703.

It is an arithmetic number, because the mean of its divisors is an integer number (98784).

2^1940540 is an apocalyptic number.

1940540 is a gapful number since it is divisible by the number (10) 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 1940540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2370816).

1940540 is an abundant number, since it is smaller than the sum of its proper divisors (2801092).

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

1940540 is a wasteful number, since it uses less digits than its factorization.

1940540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1940540 is about 1393.0326629336. The cubic root of 1940540 is about 124.7309412747.

The spelling of 1940540 in words is "one million, nine hundred forty thousand, five hundred forty".