1080640 has 56 divisors (see below), whose sum is σ = 2816352. Its totient is φ = 391680.

The previous prime is 1080613. The next prime is 1080647. The reversal of 1080640 is 460801.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080647) 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, 3367 + ... + 3673.

It is an arithmetic number, because the mean of its divisors is an integer number (50292).

2^1080640 is an apocalyptic number.

1080640 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 1080640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1408176).

1080640 is an abundant number, since it is smaller than the sum of its proper divisors (1735712).

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

1080640 is a wasteful number, since it uses less digits than its factorization.

1080640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1080640 is about 1039.5383590806. The cubic root of 1080640 is about 102.6188191803.

The spelling of 1080640 in words is "one million, eighty thousand, six hundred forty".