866904288 has 96 divisors (see below), whose sum is σ = 2322754560. Its totient is φ = 283046400.

The previous prime is 866904281. The next prime is 866904299. The reversal of 866904288 is 882409668.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 866904288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866904281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1144806 + ... + 1145562.

It is an arithmetic number, because the mean of its divisors is an integer number (24195360).

Almost surely, 2^866904288 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 866904288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161377280).

866904288 is an abundant number, since it is smaller than the sum of its proper divisors (1455850272).

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

866904288 is a wasteful number, since it uses less digits than its factorization.

866904288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The square root of 866904288 is about 29443.2384088435. The cubic root of 866904288 is about 953.5066297295.

The spelling of 866904288 in words is "eight hundred sixty-six million, nine hundred four thousand, two hundred eighty-eight".