229738440 has 32 divisors (see below), whose sum is σ = 689215680. Its totient is φ = 61263552.

The previous prime is 229738387. The next prime is 229738441. The reversal of 229738440 is 44837922.

229738440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (229738441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957124 + ... + 957363.

It is an arithmetic number, because the mean of its divisors is an integer number (21537990).

Almost surely, 2^229738440 is an apocalyptic number.

229738440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229738440 is an abundant number, since it is smaller than the sum of its proper divisors (459477240).

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

229738440 is a wasteful number, since it uses less digits than its factorization.

229738440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914501 (or 1914497 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 229738440 is about 15157.1250572132. The cubic root of 229738440 is about 612.4602245446.

It can be divided in two parts, 22973 and 8440, that added together give a palindrome (31413).

The spelling of 229738440 in words is "two hundred twenty-nine million, seven hundred thirty-eight thousand, four hundred forty".