229505420 has 48 divisors (see below), whose sum is σ = 500774400. Its totient is φ = 88247040.

The previous prime is 229505407. The next prime is 229505429. The reversal of 229505420 is 24505922.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (229505429) 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 15 ways as a sum of consecutive naturals, for example, 155285 + ... + 156755.

It is an arithmetic number, because the mean of its divisors is an integer number (10432800).

Almost surely, 2^229505420 is an apocalyptic number.

229505420 is a gapful number since it is divisible by the number (20) 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 229505420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250387200).

229505420 is an abundant number, since it is smaller than the sum of its proper divisors (271268980).

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

229505420 is a wasteful number, since it uses less digits than its factorization.

229505420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 229505420 is about 15149.4362931431. The cubic root of 229505420 is about 612.2530849818.

The spelling of 229505420 in words is "two hundred twenty-nine million, five hundred five thousand, four hundred twenty".