1092820 has 24 divisors (see below), whose sum is σ = 2321928. Its totient is φ = 432000.

The previous prime is 1092803. The next prime is 1092821. The reversal of 1092820 is 282901.

It can be written as a sum of positive squares in 4 ways, for example, as 311364 + 781456 = 558^2 + 884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1092791 and 1092800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1092821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750 + ... + 2290.

It is an arithmetic number, because the mean of its divisors is an integer number (96747).

2^1092820 is an apocalyptic number.

1092820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1092820 is an abundant number, since it is smaller than the sum of its proper divisors (1229108).

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

1092820 is a wasteful number, since it uses less digits than its factorization.

1092820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1092820 is about 1045.3803135701. The cubic root of 1092820 is about 103.0029219644.

The spelling of 1092820 in words is "one million, ninety-two thousand, eight hundred twenty".