1115920806 has 288 divisors, whose sum is σ = 3260436480. Its totient is φ = 251475840.

The previous prime is 1115920781. The next prime is 1115920811. The reversal of 1115920806 is 6080295111.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8786715 + ... + 8786841.

It is an arithmetic number, because the mean of its divisors is an integer number (11320960).

Almost surely, 2^1115920806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115920806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1630218240).

1115920806 is an abundant number, since it is smaller than the sum of its proper divisors (2144515674).

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

1115920806 is a wasteful number, since it uses less digits than its factorization.

1115920806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1115920806 is about 33405.4008507606. The cubic root of 1115920806 is about 1037.2365014488.

The spelling of 1115920806 in words is "one billion, one hundred fifteen million, nine hundred twenty thousand, eight hundred six".