229706420 has 18 divisors (see below), whose sum is σ = 482525862. Its totient is φ = 91855456.

The previous prime is 229706417. The next prime is 229706429. The reversal of 229706420 is 24607922.

It can be written as a sum of positive squares in 3 ways, for example, as 148742416 + 80964004 = 12196^2 + 8998^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229706429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66086 + ... + 69474.

Almost surely, 2^229706420 is an apocalyptic number.

229706420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229706420 is an abundant number, since it is smaller than the sum of its proper divisors (252819442).

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

229706420 is an frugal number, since it uses more digits than its factorization.

229706420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6787 (or 3396 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 229706420 is about 15156.0687514936. The cubic root of 229706420 is about 612.4317691592.

The spelling of 229706420 in words is "two hundred twenty-nine million, seven hundred six thousand, four hundred twenty".