229978840 has 256 divisors, whose sum is σ = 690923520. Its totient is φ = 66908160.

The previous prime is 229978811. The next prime is 229978841. The reversal of 229978840 is 48879922.

229978840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229978841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3432487 + ... + 3432553.

It is an arithmetic number, because the mean of its divisors is an integer number (2698920).

Almost surely, 2^229978840 is an apocalyptic number.

229978840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229978840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345461760).

229978840 is an abundant number, since it is smaller than the sum of its proper divisors (460944680).

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

229978840 is a wasteful number, since it uses less digits than its factorization.

229978840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 229978840 is about 15165.0532475161. The cubic root of 229978840 is about 612.6737777079.

The spelling of 229978840 in words is "two hundred twenty-nine million, nine hundred seventy-eight thousand, eight hundred forty".