228333386 has 4 divisors (see below), whose sum is σ = 342500082. Its totient is φ = 114166692.

The previous prime is 228333361. The next prime is 228333389. The reversal of 228333386 is 683333822.

It is a happy number.

228333386 is digitally balanced in base 2, 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., 227557225 + 776161 = 15085^2 + 881^2 .

It is a super-2 number, since 2×228333386² = 104272270324449992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228333389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57083345 + ... + 57083348.

Almost surely, 2^228333386 is an apocalyptic number.

228333386 is a deficient number, since it is larger than the sum of its proper divisors (114166696).

228333386 is a wasteful number, since it uses less digits than its factorization.

228333386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114166695.

The product of its digits is 124416, while the sum is 38.

The square root of 228333386 is about 15110.7043515516. The cubic root of 228333386 is about 611.2090915980.

The spelling of 228333386 in words is "two hundred twenty-eight million, three hundred thirty-three thousand, three hundred eighty-six".