1099230720 has 480 divisors, whose sum is σ = 4299153408. Its totient is φ = 238436352.

The previous prime is 1099230719. The next prime is 1099230721. The reversal of 1099230720 is 270329901.

It is an interprime number because it is at equal distance from previous prime (1099230719) and next prime (1099230721).

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099230721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8655297 + ... + 8655423.

Almost surely, 2^1099230720 is an apocalyptic number.

1099230720 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 1099230720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2149576704).

1099230720 is an abundant number, since it is smaller than the sum of its proper divisors (3199922688).

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

1099230720 is a wasteful number, since it uses less digits than its factorization.

1099230720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1099230720 is about 33154.6485428514. The cubic root of 1099230720 is about 1032.0394192022.

The spelling of 1099230720 in words is "one billion, ninety-nine million, two hundred thirty thousand, seven hundred twenty".