1089802560 has 448 divisors, whose sum is σ = 4508504064. Its totient is φ = 216268800.

The previous prime is 1089802559. The next prime is 1089802573. The reversal of 1089802560 is 652089801.

It is a tau number, because it is divible by the number of its divisors (448).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1699840 + ... + 1700480.

Almost surely, 2^1089802560 is an apocalyptic number.

1089802560 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 1089802560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2254252032).

1089802560 is an abundant number, since it is smaller than the sum of its proper divisors (3418701504).

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

1089802560 is a wasteful number, since it uses less digits than its factorization.

1089802560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1089802560 is about 33012.1577604373. The cubic root of 1089802560 is about 1029.0803240154.

The spelling of 1089802560 in words is "one billion, eighty-nine million, eight hundred two thousand, five hundred sixty".