228660738 has 8 divisors (see below), whose sum is σ = 457321488. Its totient is φ = 76220244.

The previous prime is 228660701. The next prime is 228660787. The reversal of 228660738 is 837066822.

228660738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

228660738 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 228660738.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19055056 + ... + 19055067.

It is an arithmetic number, because the mean of its divisors is an integer number (57165186).

Almost surely, 2^228660738 is an apocalyptic number.

228660738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228660738 is a wasteful number, since it uses less digits than its factorization.

228660738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38110128.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 228660738 is about 15121.5322636299. The cubic root of 228660738 is about 611.5010404051.

The spelling of 228660738 in words is "two hundred twenty-eight million, six hundred sixty thousand, seven hundred thirty-eight".