228348428 has 36 divisors (see below), whose sum is σ = 507116232. Its totient is φ = 88966080.

The previous prime is 228348427. The next prime is 228348431. The reversal of 228348428 is 824843822.

It is not an unprimeable number, because it can be changed into a prime (228348427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50801 + ... + 55112.

It is an arithmetic number, because the mean of its divisors is an integer number (14086562).

Almost surely, 2^228348428 is an apocalyptic number.

228348428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

228348428 is an abundant number, since it is smaller than the sum of its proper divisors (278767804).

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

228348428 is a wasteful number, since it uses less digits than its factorization.

228348428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105942 (or 105933 counting only the distinct ones).

The product of its digits is 196608, while the sum is 41.

The square root of 228348428 is about 15111.2020699877. The cubic root of 228348428 is about 611.2225129165. Note that the first 3 decimals are identical.

The spelling of 228348428 in words is "two hundred twenty-eight million, three hundred forty-eight thousand, four hundred twenty-eight".