1089580 has 24 divisors (see below), whose sum is σ = 2309328. Its totient is φ = 431808.

The previous prime is 1089563. The next prime is 1089611. The reversal of 1089580 is 859801.

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, 2967 + ... + 3313.

It is an arithmetic number, because the mean of its divisors is an integer number (96222).

2^1089580 is an apocalyptic number.

1089580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089580 is an abundant number, since it is smaller than the sum of its proper divisors (1219748).

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

1089580 is a wasteful number, since it uses less digits than its factorization.

1089580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1089580 is about 1043.8294879912. The cubic root of 1089580 is about 102.9010266154.

The spelling of 1089580 in words is "one million, eighty-nine thousand, five hundred eighty".