229299920 has 30 divisors (see below), whose sum is σ = 533437398. Its totient is φ = 91665792.

The previous prime is 229299907. The next prime is 229299937. The reversal of 229299920 is 29992922.

It can be written as a sum of positive squares in 3 ways, for example, as 9193024 + 220106896 = 3032^2 + 14836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134594 + ... + 136286.

Almost surely, 2^229299920 is an apocalyptic number.

229299920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229299920 is an abundant number, since it is smaller than the sum of its proper divisors (304137478).

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

229299920 is an frugal number, since it uses more digits than its factorization.

229299920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 229299920 is about 15142.6523436286. The cubic root of 229299920 is about 612.0702925227.

The spelling of 229299920 in words is "two hundred twenty-nine million, two hundred ninety-nine thousand, nine hundred twenty".