229621072 has 20 divisors (see below), whose sum is σ = 460232820. Its totient is φ = 110851328.

The previous prime is 229621039. The next prime is 229621079. The reversal of 229621072 is 270126922.

It can be written as a sum of positive squares in 2 ways, for example, as 100480576 + 129140496 = 10024^2 + 11364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229621079) 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 3 ways as a sum of consecutive naturals, for example, 246973 + ... + 247900.

It is an arithmetic number, because the mean of its divisors is an integer number (23011641).

Almost surely, 2^229621072 is an apocalyptic number.

It is an amenable number.

229621072 is an abundant number, since it is smaller than the sum of its proper divisors (230611748).

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

229621072 is a wasteful number, since it uses less digits than its factorization.

229621072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494910 (or 494904 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 229621072 is about 15153.2528521107. The cubic root of 229621072 is about 612.3559095734.

Adding to 229621072 its reverse (270126922), we get a palindrome (499747994).

The spelling of 229621072 in words is "two hundred twenty-nine million, six hundred twenty-one thousand, seventy-two".