1089285120 has 528 divisors, whose sum is σ = 4721004288. Its totient is φ = 225607680.

The previous prime is 1089285079. The next prime is 1089285133. The reversal of 1089285120 is 215829801.

It is a tau number, because it is divible by the number of its divisors (528).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3548007 + ... + 3548313.

It is an arithmetic number, because the mean of its divisors is an integer number (8941296).

Almost surely, 2^1089285120 is an apocalyptic number.

1089285120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089285120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2360502144).

1089285120 is an abundant number, since it is smaller than the sum of its proper divisors (3631719168).

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

1089285120 is a wasteful number, since it uses less digits than its factorization.

1089285120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1089285120 is about 33004.3197172734. The cubic root of 1089285120 is about 1028.9174285699.

The spelling of 1089285120 in words is "one billion, eighty-nine million, two hundred eighty-five thousand, one hundred twenty".