849730128 has 80 divisors (see below), whose sum is σ = 2370889920. Its totient is φ = 260692992.

The previous prime is 849730109. The next prime is 849730153. The reversal of 849730128 is 821037948.

It is a self number, because there is not a number n which added to its sum of digits gives 849730128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234700 + ... + 238292.

It is an arithmetic number, because the mean of its divisors is an integer number (29636124).

Almost surely, 2^849730128 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 849730128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185444960).

849730128 is an abundant number, since it is smaller than the sum of its proper divisors (1521159792).

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

849730128 is a wasteful number, since it uses less digits than its factorization.

849730128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996 (or 3990 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 849730128 is about 29150.1308401866. The cubic root of 849730128 is about 947.1679751335.

The spelling of 849730128 in words is "eight hundred forty-nine million, seven hundred thirty thousand, one hundred twenty-eight".