228429228 has 18 divisors (see below), whose sum is σ = 533123724. Its totient is φ = 76125624.

The previous prime is 228429209. The next prime is 228429247. The reversal of 228429228 is 822924822.

It is an interprime number because it is at equal distance from previous prime (228429209) and next prime (228429247).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50175 + ... + 54537.

Almost surely, 2^228429228 is an apocalyptic number.

It is an amenable number.

228429228 is an abundant number, since it is smaller than the sum of its proper divisors (304694496).

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

228429228 is an frugal number, since it uses more digits than its factorization.

228429228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8733 (or 4368 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 228429228 is about 15113.8753468460. The cubic root of 228429228 is about 611.2945971367.

The spelling of 228429228 in words is "two hundred twenty-eight million, four hundred twenty-nine thousand, two hundred twenty-eight".