228489642 has 12 divisors (see below), whose sum is σ = 495060930. Its totient is φ = 76163208.

The previous prime is 228489629. The next prime is 228489683. The reversal of 228489642 is 246984822.

It can be written as a sum of positive squares in only one way, i.e., 187388721 + 41100921 = 13689^2 + 6411^2 .

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, 6346917 + ... + 6346952.

Almost surely, 2^228489642 is an apocalyptic number.

228489642 is an abundant number, since it is smaller than the sum of its proper divisors (266571288).

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

228489642 is a wasteful number, since it uses less digits than its factorization.

228489642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12693877 (or 12693874 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 228489642 is about 15115.8738417599. The cubic root of 228489642 is about 611.3484832598.

It can be divided in two parts, 22 and 8489642, that added together give a cube (8489664 = 204³).

The spelling of 228489642 in words is "two hundred twenty-eight million, four hundred eighty-nine thousand, six hundred forty-two".