230771128 has 32 divisors (see below), whose sum is σ = 505036800. Its totient is φ = 96796512.

The previous prime is 230771117. The next prime is 230771143. The reversal of 230771128 is 821177032.

It is a self number, because there is not a number n which added to its sum of digits gives 230771128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41208 + ... + 46471.

It is an arithmetic number, because the mean of its divisors is an integer number (15782400).

Almost surely, 2^230771128 is an apocalyptic number.

230771128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

230771128 is an abundant number, since it is smaller than the sum of its proper divisors (274265672).

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

230771128 is a wasteful number, since it uses less digits than its factorization.

230771128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87739 (or 87735 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 230771128 is about 15191.1529516360. The cubic root of 230771128 is about 613.3765347116.

The spelling of 230771128 in words is "two hundred thirty million, seven hundred seventy-one thousand, one hundred twenty-eight".