228550028 has 12 divisors (see below), whose sum is σ = 457100112. Its totient is φ = 97950000.

The previous prime is 228550019. The next prime is 228550037. The reversal of 228550028 is 820055822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228550019) and next prime (228550037).

228550028 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 228549976 and 228550003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4081223 + ... + 4081278.

It is an arithmetic number, because the mean of its divisors is an integer number (38091676).

Almost surely, 2^228550028 is an apocalyptic number.

228550028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

228550028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

228550028 is a wasteful number, since it uses less digits than its factorization.

228550028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162512 (or 8162510 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 228550028 is about 15117.8711464280. The cubic root of 228550028 is about 611.4023349173.

The spelling of 228550028 in words is "two hundred twenty-eight million, five hundred fifty thousand, twenty-eight".