229118920 has 16 divisors (see below), whose sum is σ = 515517660. Its totient is φ = 91647552.

The previous prime is 229118909. The next prime is 229118959. The reversal of 229118920 is 29811922.

229118920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 217326564 + 11792356 = 14742^2 + 3434^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2863947 + ... + 2864026.

Almost surely, 2^229118920 is an apocalyptic number.

229118920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229118920 is an abundant number, since it is smaller than the sum of its proper divisors (286398740).

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

229118920 is a wasteful number, since it uses less digits than its factorization.

229118920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727984 (or 5727980 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 229118920 is about 15136.6746678390. The cubic root of 229118920 is about 611.9092023584.

The spelling of 229118920 in words is "two hundred twenty-nine million, one hundred eighteen thousand, nine hundred twenty".