228551790 has 16 divisors (see below), whose sum is σ = 548524368. Its totient is φ = 60947136.

The previous prime is 228551783. The next prime is 228551801. The reversal of 228551790 is 97155822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3809167 + ... + 3809226.

It is an arithmetic number, because the mean of its divisors is an integer number (34282773).

Almost surely, 2^228551790 is an apocalyptic number.

228551790 is an abundant number, since it is smaller than the sum of its proper divisors (319972578).

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

228551790 is a wasteful number, since it uses less digits than its factorization.

228551790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7618403.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 228551790 is about 15117.9294217165. The cubic root of 228551790 is about 611.4039061096.

The spelling of 228551790 in words is "two hundred twenty-eight million, five hundred fifty-one thousand, seven hundred ninety".