1084720 has 80 divisors (see below), whose sum is σ = 3124800. Its totient is φ = 340992.

The previous prime is 1084711. The next prime is 1084723. The reversal of 1084720 is 274801.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1084691 and 1084700.

It is not an unprimeable number, because it can be changed into a prime (1084723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7206 + ... + 7354.

It is an arithmetic number, because the mean of its divisors is an integer number (39060).

2^1084720 is an apocalyptic number.

1084720 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 1084720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562400).

1084720 is an abundant number, since it is smaller than the sum of its proper divisors (2040080).

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

1084720 is a wasteful number, since it uses less digits than its factorization.

1084720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1084720 is about 1041.4989198266. The cubic root of 1084720 is about 102.7478041535.

The spelling of 1084720 in words is "one million, eighty-four thousand, seven hundred twenty".