229222784 has 128 divisors (see below), whose sum is σ = 558144000. Its totient is φ = 93553152.

The previous prime is 229222771. The next prime is 229222787. The reversal of 229222784 is 487222922.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229222787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009679 + ... + 1009905.

It is an arithmetic number, because the mean of its divisors is an integer number (4360500).

Almost surely, 2^229222784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229222784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279072000).

229222784 is an abundant number, since it is smaller than the sum of its proper divisors (328921216).

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

229222784 is an equidigital number, since it uses as much as digits as its factorization.

229222784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 259 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 229222784 is about 15140.1051515503. The cubic root of 229222784 is about 612.0016517819.

The spelling of 229222784 in words is "two hundred twenty-nine million, two hundred twenty-two thousand, seven hundred eighty-four".