8813287890 has 384 divisors, whose sum is σ = 27771932160. Its totient is φ = 1982154240.

The previous prime is 8813287871. The next prime is 8813287897. The reversal of 8813287890 is 987823188.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8813287897) by changing a digit.

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 191 ways as a sum of consecutive naturals, for example, 27802012 + ... + 27802328.

It is an arithmetic number, because the mean of its divisors is an integer number (72322740).

Almost surely, 2^8813287890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8813287890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13885966080).

8813287890 is an abundant number, since it is smaller than the sum of its proper divisors (18958644270).

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

8813287890 is a wasteful number, since it uses less digits than its factorization.

8813287890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 8813287890 is about 93879.1131722067. The cubic root of 8813287890 is about 2065.5988616954.

The spelling of 8813287890 in words is "eight billion, eight hundred thirteen million, two hundred eighty-seven thousand, eight hundred ninety".