798100128 has 120 divisors (see below), whose sum is σ = 2682564192. Its totient is φ = 228023424.

The previous prime is 798100123. The next prime is 798100157. The reversal of 798100128 is 821001897.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 798100092 and 798100101.

It is not an unprimeable number, because it can be changed into a prime (798100123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3850 + ... + 40137.

Almost surely, 2^798100128 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 798100128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341282096).

798100128 is an abundant number, since it is smaller than the sum of its proper divisors (1884464064).

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

798100128 is a wasteful number, since it uses less digits than its factorization.

798100128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44016 (or 43999 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 798100128 is about 28250.6659744509. The cubic root of 798100128 is about 927.5823155002.

The spelling of 798100128 in words is "seven hundred ninety-eight million, one hundred thousand, one hundred twenty-eight".