230133440 has 28 divisors (see below), whose sum is σ = 548006016. Its totient is φ = 92053248.

The previous prime is 230133439. The next prime is 230133443. The reversal of 230133440 is 44331032.

It is a super-2 number, since 2×230133440² = 105922800412467200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (230133443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359264 + ... + 359903.

Almost surely, 2^230133440 is an apocalyptic number.

230133440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230133440 is an abundant number, since it is smaller than the sum of its proper divisors (317872576).

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

230133440 is an equidigital number, since it uses as much as digits as its factorization.

230133440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719184 (or 719174 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 230133440 is about 15170.1496367043. The cubic root of 230133440 is about 612.8110340302.

Adding to 230133440 its reverse (44331032), we get a palindrome (274464472).

The spelling of 230133440 in words is "two hundred thirty million, one hundred thirty-three thousand, four hundred forty".