228707818 has 4 divisors (see below), whose sum is σ = 343061730. Its totient is φ = 114353908.

The previous prime is 228707813. The next prime is 228707887. The reversal of 228707818 is 818707822.

228707818 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 188980009 + 39727809 = 13747^2 + 6303^2 .

It is a super-2 number, since 2×228707818² = 104614532028642248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228707813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57176953 + ... + 57176956.

Almost surely, 2^228707818 is an apocalyptic number.

228707818 is a deficient number, since it is larger than the sum of its proper divisors (114353912).

228707818 is a wasteful number, since it uses less digits than its factorization.

228707818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114353911.

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 228707818 is about 15123.0889040566. The cubic root of 228707818 is about 611.5430057691.

The spelling of 228707818 in words is "two hundred twenty-eight million, seven hundred seven thousand, eight hundred eighteen".