228320038 has 4 divisors (see below), whose sum is σ = 342480060. Its totient is φ = 114160018.

The previous prime is 228320023. The next prime is 228320039. The reversal of 228320038 is 830023822.

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 = 228319988 and 228320015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228320039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57080008 + ... + 57080011.

It is an arithmetic number, because the mean of its divisors is an integer number (85620015).

Almost surely, 2^228320038 is an apocalyptic number.

228320038 is a deficient number, since it is larger than the sum of its proper divisors (114160022).

228320038 is a wasteful number, since it uses less digits than its factorization.

228320038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114160021.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 228320038 is about 15110.2626714429. The cubic root of 228320038 is about 611.1971812680.

The spelling of 228320038 in words is "two hundred twenty-eight million, three hundred twenty thousand, thirty-eight".