1135998720 has 216 divisors, whose sum is σ = 4058500992. Its totient is φ = 293068800.

The previous prime is 1135998709. The next prime is 1135998737. The reversal of 1135998720 is 278995311.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 355530 + ... + 358710.

Almost surely, 2^1135998720 is an apocalyptic number.

1135998720 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 1135998720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2029250496).

1135998720 is an abundant number, since it is smaller than the sum of its proper divisors (2922502272).

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

1135998720 is a wasteful number, since it uses less digits than its factorization.

1135998720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239 (or 3222 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 1135998720 is about 33704.5801041936. The cubic root of 1135998720 is about 1043.4202973600.

The spelling of 1135998720 in words is "one billion, one hundred thirty-five million, nine hundred ninety-eight thousand, seven hundred twenty".