228267438 has 32 divisors (see below), whose sum is σ = 532859904. Its totient is φ = 63831072.

The previous prime is 228267409. The next prime is 228267443. The reversal of 228267438 is 834762822.

228267438 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 228267438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55845 + ... + 59792.

It is an arithmetic number, because the mean of its divisors is an integer number (16651872).

Almost surely, 2^228267438 is an apocalyptic number.

228267438 is an abundant number, since it is smaller than the sum of its proper divisors (304592466).

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

228267438 is a wasteful number, since it uses less digits than its factorization.

228267438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115696.

The product of its digits is 258048, while the sum is 42.

The square root of 228267438 is about 15108.5220322836. The cubic root of 228267438 is about 611.1502421248.

The spelling of 228267438 in words is "two hundred twenty-eight million, two hundred sixty-seven thousand, four hundred thirty-eight".