228723838 has 16 divisors (see below), whose sum is σ = 393830784. Its totient is φ = 97591320.

The previous prime is 228723823. The next prime is 228723839. The reversal of 228723838 is 838327822.

228723838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 228723794 and 228723803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228723839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32808 + ... + 39163.

It is an arithmetic number, because the mean of its divisors is an integer number (24614424).

Almost surely, 2^228723838 is an apocalyptic number.

228723838 is a deficient number, since it is larger than the sum of its proper divisors (165106946).

228723838 is a wasteful number, since it uses less digits than its factorization.

228723838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72207.

The product of its digits is 258048, while the sum is 43.

The square root of 228723838 is about 15123.6185484824. The cubic root of 228723838 is about 611.5572840891.

The spelling of 228723838 in words is "two hundred twenty-eight million, seven hundred twenty-three thousand, eight hundred thirty-eight".