229518972 has 72 divisors (see below), whose sum is σ = 619347456. Its totient is φ = 71414784.

The previous prime is 229518967. The next prime is 229519007. The reversal of 229518972 is 279815922.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 76248 + ... + 79200.

It is an arithmetic number, because the mean of its divisors is an integer number (8602048).

Almost surely, 2^229518972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229518972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309673728).

229518972 is an abundant number, since it is smaller than the sum of its proper divisors (389828484).

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

229518972 is a wasteful number, since it uses less digits than its factorization.

229518972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107 (or 3102 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 229518972 is about 15149.8835639090. The cubic root of 229518972 is about 612.2651356638.

The spelling of 229518972 in words is "two hundred twenty-nine million, five hundred eighteen thousand, nine hundred seventy-two".