866490048 has 140 divisors (see below), whose sum is σ = 2613004680. Its totient is φ = 283834368.

The previous prime is 866489963. The next prime is 866490061. The reversal of 866490048 is 840094668.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 866489985 and 866490012.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 304440 + ... + 307272.

Almost surely, 2^866490048 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 866490048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306502340).

866490048 is an abundant number, since it is smaller than the sum of its proper divisors (1746514632).

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

866490048 is a wasteful number, since it uses less digits than its factorization.

866490048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916 (or 2897 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 866490048 is about 29436.2030160141. The cubic root of 866490048 is about 953.3547315631.

The spelling of 866490048 in words is "eight hundred sixty-six million, four hundred ninety thousand, forty-eight".