228606842 has 4 divisors (see below), whose sum is σ = 342910266. Its totient is φ = 114303420.

The previous prime is 228606839. The next prime is 228606893. The reversal of 228606842 is 248606822.

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., 158030041 + 70576801 = 12571^2 + 8401^2 .

It is a super-2 number, since 2×228606842² = 104522176418425928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228606796 and 228606805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57151709 + ... + 57151712.

Almost surely, 2^228606842 is an apocalyptic number.

228606842 is a deficient number, since it is larger than the sum of its proper divisors (114303424).

228606842 is a wasteful number, since it uses less digits than its factorization.

228606842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114303423.

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 228606842 is about 15119.7500640718. The cubic root of 228606842 is about 611.4529924395.

The spelling of 228606842 in words is "two hundred twenty-eight million, six hundred six thousand, eight hundred forty-two".