1089530 has 48 divisors (see below), whose sum is σ = 2320920. Its totient is φ = 365568.

The previous prime is 1089523. The next prime is 1089551. The reversal of 1089530 is 359801.

It can be written as a sum of positive squares in 12 ways, for example, as 192721 + 896809 = 439^2 + 947^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a zygodrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1089530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37556 + ... + 37584.

2^1089530 is an apocalyptic number.

1089530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1089530 is an abundant number, since it is smaller than the sum of its proper divisors (1231390).

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

1089530 is a wasteful number, since it uses less digits than its factorization.

1089530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1089530 is about 1043.8055374446. The cubic root of 1089530 is about 102.8994525746.

1089530 divided by its sum of digits (26) gives a triangular number (41905 = T₂₈₉).

The spelling of 1089530 in words is "one million, eighty-nine thousand, five hundred thirty".