1091322 has 24 divisors (see below), whose sum is σ = 2489760. Its totient is φ = 344520.

The previous prime is 1091287. The next prime is 1091329. The reversal of 1091322 is 2231901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1091295 and 1091304.

It is not an unprimeable number, because it can be changed into a prime (1091329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1254 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (103740).

2^1091322 is an apocalyptic number.

1091322 is an abundant number, since it is smaller than the sum of its proper divisors (1398438).

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

1091322 is a wasteful number, since it uses less digits than its factorization.

1091322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218 (or 3215 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1091322 is about 1044.6635822120. The cubic root of 1091322 is about 102.9558361579.

It can be divided in two parts, 109 and 1322, that added together give a triangular number (1431 = T₅₃).

The spelling of 1091322 in words is "one million, ninety-one thousand, three hundred twenty-two".