1083780 has 72 divisors (see below), whose sum is σ = 3424512. Its totient is φ = 287712.

The previous prime is 1083757. The next prime is 1083793. The reversal of 1083780 is 873801.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4749 + ... + 4971.

2^1083780 is an apocalyptic number.

1083780 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 1083780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1712256).

1083780 is an abundant number, since it is smaller than the sum of its proper divisors (2340732).

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

1083780 is a wasteful number, since it uses less digits than its factorization.

1083780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1083780 is about 1041.0475493463. The cubic root of 1083780 is about 102.7181157397.

The spelling of 1083780 in words is "one million, eighty-three thousand, seven hundred eighty".