1092780 has 72 divisors (see below), whose sum is σ = 3577392. Its totient is φ = 268416.

The previous prime is 1092779. The next prime is 1092803. The reversal of 1092780 is 872901.

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, 2107 + ... + 2573.

It is an arithmetic number, because the mean of its divisors is an integer number (49686).

2^1092780 is an apocalyptic number.

1092780 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 1092780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788696).

1092780 is an abundant number, since it is smaller than the sum of its proper divisors (2484612).

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

1092780 is a wasteful number, since it uses less digits than its factorization.

1092780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1092780 is about 1045.3611816018. The cubic root of 1092780 is about 103.0016652259.

The spelling of 1092780 in words is "one million, ninety-two thousand, seven hundred eighty".