1089294720 has 256 divisors, whose sum is σ = 3838855680. Its totient is φ = 261324800.

The previous prime is 1089294707. The next prime is 1089294727. The reversal of 1089294720 is 274929801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089294727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 749995 + ... + 751445.

It is an arithmetic number, because the mean of its divisors is an integer number (14995530).

Almost surely, 2^1089294720 is an apocalyptic number.

1089294720 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 1089294720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1919427840).

1089294720 is an abundant number, since it is smaller than the sum of its proper divisors (2749560960).

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

1089294720 is a wasteful number, since it uses less digits than its factorization.

1089294720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1089294720 is about 33004.4651524608. The cubic root of 1089294720 is about 1028.9204512185.

The spelling of 1089294720 in words is "one billion, eighty-nine million, two hundred ninety-four thousand, seven hundred twenty".