866244148 has 72 divisors (see below), whose sum is σ = 1975911840. Its totient is φ = 328345920.

The previous prime is 866244133. The next prime is 866244179. The reversal of 866244148 is 841442668.

866244148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74343 + ... + 85201.

It is an arithmetic number, because the mean of its divisors is an integer number (27443220).

Almost surely, 2^866244148 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 866244148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987955920).

866244148 is an abundant number, since it is smaller than the sum of its proper divisors (1109667692).

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

866244148 is a wasteful number, since it uses less digits than its factorization.

866244148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10925 (or 10916 counting only the distinct ones).

The product of its digits is 294912, while the sum is 43.

The square root of 866244148 is about 29432.0258901762. The cubic root of 866244148 is about 953.2645392950.

The spelling of 866244148 in words is "eight hundred sixty-six million, two hundred forty-four thousand, one hundred forty-eight".