230136928 has 72 divisors (see below), whose sum is σ = 529859232. Its totient is φ = 98106624.

The previous prime is 230136889. The next prime is 230136931. The reversal of 230136928 is 829631032.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 230136893 and 230136902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 496825 + ... + 497287.

It is an arithmetic number, because the mean of its divisors is an integer number (7359156).

Almost surely, 2^230136928 is an apocalyptic number.

230136928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230136928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264929616).

230136928 is an abundant number, since it is smaller than the sum of its proper divisors (299722304).

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

230136928 is a wasteful number, since it uses less digits than its factorization.

230136928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 230136928 is about 15170.2645988790. The cubic root of 230136928 is about 612.8141300225.

The spelling of 230136928 in words is "two hundred thirty million, one hundred thirty-six thousand, nine hundred twenty-eight".