1749340240 has 20 divisors (see below), whose sum is σ = 4067216244. Its totient is φ = 699736064.

The previous prime is 1749340217. The next prime is 1749340247. The reversal of 1749340240 is 420439471.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 406264336 + 1343075904 = 20156^2 + 36648^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1749340196 and 1749340205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1749340247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10933297 + ... + 10933456.

Almost surely, 2^1749340240 is an apocalyptic number.

1749340240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1749340240 is an abundant number, since it is smaller than the sum of its proper divisors (2317876004).

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

1749340240 is a wasteful number, since it uses less digits than its factorization.

1749340240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21866766 (or 21866760 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1749340240 is about 41825.1149430578. The cubic root of 1749340240 is about 1204.9196734848.

The spelling of 1749340240 in words is "one billion, seven hundred forty-nine million, three hundred forty thousand, two hundred forty".