228155790 has 16 divisors (see below), whose sum is σ = 547573968. Its totient is φ = 60841536.

The previous prime is 228155771. The next prime is 228155797. The reversal of 228155790 is 97551822.

228155790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228155797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3802567 + ... + 3802626.

It is an arithmetic number, because the mean of its divisors is an integer number (34223373).

Almost surely, 2^228155790 is an apocalyptic number.

228155790 is an abundant number, since it is smaller than the sum of its proper divisors (319418178).

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

228155790 is a wasteful number, since it uses less digits than its factorization.

228155790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7605203.

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

The square root of 228155790 is about 15104.8267120149. The cubic root of 228155790 is about 611.0505858759.

The spelling of 228155790 in words is "two hundred twenty-eight million, one hundred fifty-five thousand, seven hundred ninety".