1115775320 has 64 divisors (see below), whose sum is σ = 2749904640. Its totient is φ = 404080000.

The previous prime is 1115775307. The next prime is 1115775341. The reversal of 1115775320 is 235775111.

It is a super-3 number, since 3×1115775320³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105389 + ... + 115491.

It is an arithmetic number, because the mean of its divisors is an integer number (42967260).

Almost surely, 2^1115775320 is an apocalyptic number.

1115775320 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 1115775320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374952320).

1115775320 is an abundant number, since it is smaller than the sum of its proper divisors (1634129320).

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

1115775320 is a wasteful number, since it uses less digits than its factorization.

1115775320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376 (or 10372 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 1115775320 is about 33403.2231977694. The cubic root of 1115775320 is about 1037.1914235940.

The spelling of 1115775320 in words is "one billion, one hundred fifteen million, seven hundred seventy-five thousand, three hundred twenty".