1089320 has 32 divisors (see below), whose sum is σ = 2482920. Its totient is φ = 430080.

The previous prime is 1089313. The next prime is 1089359. The reversal of 1089320 is 239801.

It can be written as a sum of positive squares in 4 ways, for example, as 682276 + 407044 = 826^2 + 638^2 .

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4400 + ... + 4640.

2^1089320 is an apocalyptic number.

1089320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089320 is an abundant number, since it is smaller than the sum of its proper divisors (1393600).

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

1089320 is a wasteful number, since it uses less digits than its factorization.

1089320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1089320 is about 1043.7049391471. The cubic root of 1089320 is about 102.8928410775.

The spelling of 1089320 in words is "one million, eighty-nine thousand, three hundred twenty".