230020518 has 128 divisors (see below), whose sum is σ = 596736000. Its totient is φ = 57480192.

The previous prime is 230020513. The next prime is 230020541. The reversal of 230020518 is 815020032.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 230020494 and 230020503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230020513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1155783 + ... + 1155981.

It is an arithmetic number, because the mean of its divisors is an integer number (4662000).

Almost surely, 2^230020518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230020518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298368000).

230020518 is an abundant number, since it is smaller than the sum of its proper divisors (366715482).

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

230020518 is a wasteful number, since it uses less digits than its factorization.

230020518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 230020518 is about 15166.4273314449. The cubic root of 230020518 is about 612.7107861494.

The spelling of 230020518 in words is "two hundred thirty million, twenty thousand, five hundred eighteen".