811888704 has 224 divisors, whose sum is σ = 2632740480. Its totient is φ = 245329920.

The previous prime is 811888687. The next prime is 811888717. The reversal of 811888704 is 407888118.

It is a super-3 number, since 3×811888704³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 811888704.

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, 2299792 + ... + 2300144.

Almost surely, 2^811888704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811888704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316370240).

811888704 is an abundant number, since it is smaller than the sum of its proper divisors (1820851776).

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

811888704 is a wasteful number, since it uses less digits than its factorization.

811888704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 45.

The square root of 811888704 is about 28493.6607686692. The cubic root of 811888704 is about 932.8937131433.

The spelling of 811888704 in words is "eight hundred eleven million, eight hundred eighty-eight thousand, seven hundred four".