229172988 has 96 divisors (see below), whose sum is σ = 626572800. Its totient is φ = 64419840.

The previous prime is 229172981. The next prime is 229173059. The reversal of 229172988 is 889271922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229172981) 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 31 ways as a sum of consecutive naturals, for example, 163113 + ... + 164511.

It is an arithmetic number, because the mean of its divisors is an integer number (6526800).

Almost surely, 2^229172988 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 229172988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313286400).

229172988 is an abundant number, since it is smaller than the sum of its proper divisors (397399812).

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

229172988 is a wasteful number, since it uses less digits than its factorization.

229172988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507 (or 1505 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 229172988 is about 15138.4605558161. The cubic root of 229172988 is about 611.9573318110.

The spelling of 229172988 in words is "two hundred twenty-nine million, one hundred seventy-two thousand, nine hundred eighty-eight".