228617242 has 12 divisors (see below), whose sum is σ = 398913930. Its totient is φ = 97978776.

The previous prime is 228617227. The next prime is 228617267. The reversal of 228617242 is 242716822.

It can be written as a sum of positive squares in only one way, i.e., 216707841 + 11909401 = 14721^2 + 3451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 228617198 and 228617207.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1166317 + ... + 1166512.

Almost surely, 2^228617242 is an apocalyptic number.

228617242 is a deficient number, since it is larger than the sum of its proper divisors (170296688).

228617242 is a wasteful number, since it uses less digits than its factorization.

228617242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332845 (or 2332838 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 228617242 is about 15120.0939811894. The cubic root of 228617242 is about 611.4622645660.

It can be divided in two parts, 22861 and 7242, that added together give a palindrome (30103).

The spelling of 228617242 in words is "two hundred twenty-eight million, six hundred seventeen thousand, two hundred forty-two".