228868438 has 4 divisors (see below), whose sum is σ = 343302660. Its totient is φ = 114434218.

The previous prime is 228868411. The next prime is 228868439. The reversal of 228868438 is 834868822.

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

It is a junction number, because it is equal to n+sod(n) for n = 228868391 and 228868400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228868439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57217108 + ... + 57217111.

It is an arithmetic number, because the mean of its divisors is an integer number (85825665).

Almost surely, 2^228868438 is an apocalyptic number.

228868438 is a deficient number, since it is larger than the sum of its proper divisors (114434222).

228868438 is a wasteful number, since it uses less digits than its factorization.

228868438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114434221.

The product of its digits is 1179648, while the sum is 49.

The square root of 228868438 is about 15128.3983950714. The cubic root of 228868438 is about 611.6861331487.

The spelling of 228868438 in words is "two hundred twenty-eight million, eight hundred sixty-eight thousand, four hundred thirty-eight".