229775028 has 96 divisors (see below), whose sum is σ = 632862720. Its totient is φ = 63530880.

The previous prime is 229775027. The next prime is 229775059. The reversal of 229775028 is 820577922.

It is a happy number.

229775028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229775027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351550 + ... + 352202.

It is an arithmetic number, because the mean of its divisors is an integer number (6592320).

Almost surely, 2^229775028 is an apocalyptic number.

229775028 is a gapful number since it is divisible by the number (28) 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 229775028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316431360).

229775028 is an abundant number, since it is smaller than the sum of its proper divisors (403087692).

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

229775028 is a wasteful number, since it uses less digits than its factorization.

229775028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 795 counting only the distinct ones).

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

The square root of 229775028 is about 15158.3319662818. The cubic root of 229775028 is about 612.4927361626.

The spelling of 229775028 in words is "two hundred twenty-nine million, seven hundred seventy-five thousand, twenty-eight".