230405440 has 56 divisors (see below), whose sum is σ = 549947592. Its totient is φ = 91944960.

The previous prime is 230405411. The next prime is 230405453. The reversal of 230405440 is 44504032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33732864 + 196672576 = 5808^2 + 14024^2 .

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262282 + ... + 263158.

Almost surely, 2^230405440 is an apocalyptic number.

230405440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230405440 is an abundant number, since it is smaller than the sum of its proper divisors (319542152).

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

230405440 is an equidigital number, since it uses as much as digits as its factorization.

230405440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715 (or 1705 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 230405440 is about 15179.1119634846. Note that the first 3 decimals coincide. The cubic root of 230405440 is about 613.0523707881.

Adding to 230405440 its reverse (44504032), we get a palindrome (274909472).

The spelling of 230405440 in words is "two hundred thirty million, four hundred five thousand, four hundred forty".