228542436 has 18 divisors (see below), whose sum is σ = 577704582. Its totient is φ = 76180800.

The previous prime is 228542429. The next prime is 228542453. The reversal of 228542436 is 634245822.

228542436 is a `hidden beast` number, since 228 + 5 + 424 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 183060900 + 45481536 = 13530^2 + 6744^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6348401 = 228542436 / (2 + 2 + 8 + 5 + 4 + 2 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 228542436.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3174165 + ... + 3174236.

It is an arithmetic number, because the mean of its divisors is an integer number (32094699).

Almost surely, 2^228542436 is an apocalyptic number.

It is an amenable number.

228542436 is an abundant number, since it is smaller than the sum of its proper divisors (349162146).

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

228542436 is a wasteful number, since it uses less digits than its factorization.

228542436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348411 (or 6348406 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 228542436 is about 15117.6200507884. The cubic root of 228542436 is about 611.3955649656.

It can be divided in two parts, 22 and 8542436, that added together give a palindrome (8542458).

The spelling of 228542436 in words is "two hundred twenty-eight million, five hundred forty-two thousand, four hundred thirty-six".