1158726720 has 224 divisors, whose sum is σ = 3827897856. Its totient is φ = 296755200.

The previous prime is 1158726713. The next prime is 1158726763. The reversal of 1158726720 is 276278511.

It is a super-2 number, since 2×1158726720² = 2685295223283916800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2752110 + ... + 2752530.

Almost surely, 2^1158726720 is an apocalyptic number.

1158726720 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 1158726720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1913948928).

1158726720 is an abundant number, since it is smaller than the sum of its proper divisors (2669171136).

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

1158726720 is a wasteful number, since it uses less digits than its factorization.

1158726720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 1158726720 is about 34040.0752055573. The cubic root of 1158726720 is about 1050.3329918911.

The spelling of 1158726720 in words is "one billion, one hundred fifty-eight million, seven hundred twenty-six thousand, seven hundred twenty".