1083978 has 36 divisors (see below), whose sum is σ = 2734290. Its totient is φ = 309456.

The previous prime is 1083949. The next prime is 1083983. The reversal of 1083978 is 8793801.

It can be written as a sum of positive squares in only one way, i.e., 603729 + 480249 = 777^2 + 693^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 268 + ... + 1496.

2^1083978 is an apocalyptic number.

1083978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1083978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367145).

1083978 is an abundant number, since it is smaller than the sum of its proper divisors (1650312).

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

1083978 is a wasteful number, since it uses less digits than its factorization.

1083978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1083978 is about 1041.1426415242. The cubic root of 1083978 is about 102.7243706834.

The spelling of 1083978 in words is "one million, eighty-three thousand, nine hundred seventy-eight".