228144436 has 24 divisors (see below), whose sum is σ = 438082344. Its totient is φ = 103309440.

The previous prime is 228144409. The next prime is 228144443. The reversal of 228144436 is 634441822.

228144436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1822500 + 226321936 = 1350^2 + 15044^2 .

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, 38635 + ... + 44146.

It is an arithmetic number, because the mean of its divisors is an integer number (18253431).

Almost surely, 2^228144436 is an apocalyptic number.

228144436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

228144436 is a deficient number, since it is larger than the sum of its proper divisors (209937908).

228144436 is a wasteful number, since it uses less digits than its factorization.

228144436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82851 (or 82849 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 228144436 is about 15104.4508672113. The cubic root of 228144436 is about 611.0404495513.

The spelling of 228144436 in words is "two hundred twenty-eight million, one hundred forty-four thousand, four hundred thirty-six".