228132278 has 32 divisors (see below), whose sum is σ = 395280000. Its totient is φ = 97657920.

The previous prime is 228132271. The next prime is 228132283. The reversal of 228132278 is 872231822.

It is a happy number.

228132278 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 (228132271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73298 + ... + 76346.

It is an arithmetic number, because the mean of its divisors is an integer number (12352500).

Almost surely, 2^228132278 is an apocalyptic number.

228132278 is a deficient number, since it is larger than the sum of its proper divisors (167147722).

228132278 is a wasteful number, since it uses less digits than its factorization.

228132278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260.

The product of its digits is 21504, while the sum is 35.

The square root of 228132278 is about 15104.0483976979. The cubic root of 228132278 is about 611.0295950799.

The spelling of 228132278 in words is "two hundred twenty-eight million, one hundred thirty-two thousand, two hundred seventy-eight".