228209232 has 20 divisors (see below), whose sum is σ = 589540640. Its totient is φ = 76069728.

The previous prime is 228209153. The next prime is 228209237. The reversal of 228209232 is 232902822.

It is a self number, because there is not a number n which added to its sum of digits gives 228209232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228209237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2377132 + ... + 2377227.

It is an arithmetic number, because the mean of its divisors is an integer number (29477032).

Almost surely, 2^228209232 is an apocalyptic number.

It is an amenable number.

228209232 is an abundant number, since it is smaller than the sum of its proper divisors (361331408).

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

228209232 is a wasteful number, since it uses less digits than its factorization.

228209232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754370 (or 4754364 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 228209232 is about 15106.5956456112. The cubic root of 228209232 is about 611.0982918988.

The spelling of 228209232 in words is "two hundred twenty-eight million, two hundred nine thousand, two hundred thirty-two".