229578720 has 288 divisors, whose sum is σ = 864597888. Its totient is φ = 51028992.

The previous prime is 229578719. The next prime is 229578733. The reversal of 229578720 is 27875922.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1011247 + ... + 1011473.

It is an arithmetic number, because the mean of its divisors is an integer number (3002076).

Almost surely, 2^229578720 is an apocalyptic number.

229578720 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 229578720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432298944).

229578720 is an abundant number, since it is smaller than the sum of its proper divisors (635019168).

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

229578720 is a wasteful number, since it uses less digits than its factorization.

229578720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 229578720 is about 15151.8553319387. The cubic root of 229578720 is about 612.3182590043.

The spelling of 229578720 in words is "two hundred twenty-nine million, five hundred seventy-eight thousand, seven hundred twenty".