1740040 has 32 divisors (see below), whose sum is σ = 4014360. Its totient is φ = 678400.

The previous prime is 1739981. The next prime is 1740041. The reversal of 1740040 is 400471.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1077444 + 662596 = 1038^2 + 814^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1739996 and 1740023.

It is not an unprimeable number, because it can be changed into a prime (1740041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110 + ... + 2170.

2^1740040 is an apocalyptic number.

1740040 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 1740040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007180).

1740040 is an abundant number, since it is smaller than the sum of its proper divisors (2274320).

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

1740040 is a wasteful number, since it uses less digits than its factorization.

1740040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1740040 is about 1319.1057577010. The cubic root of 1740040 is about 120.2780588998.

The spelling of 1740040 in words is "one million, seven hundred forty thousand, forty".