228318842 has 4 divisors (see below), whose sum is σ = 342478266. Its totient is φ = 114159420.

The previous prime is 228318833. The next prime is 228318899. The reversal of 228318842 is 248813822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 208773601 + 19545241 = 14449^2 + 4421^2 .

It is a super-2 number, since 2×228318842² = 104258987224441928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228318796 and 228318805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57079709 + ... + 57079712.

Almost surely, 2^228318842 is an apocalyptic number.

228318842 is a deficient number, since it is larger than the sum of its proper divisors (114159424).

228318842 is a wasteful number, since it uses less digits than its factorization.

228318842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114159423.

The product of its digits is 49152, while the sum is 38.

The square root of 228318842 is about 15110.2230956396. The cubic root of 228318842 is about 611.1961140626.

The spelling of 228318842 in words is "two hundred twenty-eight million, three hundred eighteen thousand, eight hundred forty-two".