1768240 has 60 divisors (see below), whose sum is σ = 4432752. Its totient is φ = 654720.

The previous prime is 1768231. The next prime is 1768241. The reversal of 1768240 is 428671.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1768199 and 1768208.

It is not an unprimeable number, because it can be changed into a prime (1768241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57025 + ... + 57055.

2^1768240 is an apocalyptic number.

1768240 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 1768240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2216376).

1768240 is an abundant number, since it is smaller than the sum of its proper divisors (2664512).

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

1768240 is a wasteful number, since it uses less digits than its factorization.

1768240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1768240 is about 1329.7518565507. The cubic root of 1768240 is about 120.9243431149.

The spelling of 1768240 in words is "one million, seven hundred sixty-eight thousand, two hundred forty".