228135880 has 32 divisors (see below), whose sum is σ = 586635840. Its totient is φ = 78217920.

The previous prime is 228135847. The next prime is 228135881. The reversal of 228135880 is 88531822.

It is not an unprimeable number, because it can be changed into a prime (228135881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407106 + ... + 407665.

It is an arithmetic number, because the mean of its divisors is an integer number (18332370).

Almost surely, 2^228135880 is an apocalyptic number.

228135880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228135880 is an abundant number, since it is smaller than the sum of its proper divisors (358499960).

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

228135880 is a wasteful number, since it uses less digits than its factorization.

228135880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814789 (or 814785 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 228135880 is about 15104.1676367816. The cubic root of 228135880 is about 611.0328109291.

The spelling of 228135880 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, eight hundred eighty".