1078440 has 128 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 241920.

The previous prime is 1078417. The next prime is 1078471. The reversal of 1078440 is 448701.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1078440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25059 + ... + 25101.

It is an arithmetic number, because the mean of its divisors is an integer number (29700).

2^1078440 is an apocalyptic number.

1078440 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 1078440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1900800).

1078440 is an abundant number, since it is smaller than the sum of its proper divisors (2723160).

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

1078440 is a wasteful number, since it uses less digits than its factorization.

1078440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1078440 is about 1038.4796579616. The cubic root of 1078440 is about 102.5491336915.

The spelling of 1078440 in words is "one million, seventy-eight thousand, four hundred forty".