228138758 has 8 divisors (see below), whose sum is σ = 342951840. Its totient is φ = 113821480.

The previous prime is 228138749. The next prime is 228138763. The reversal of 228138758 is 857831822.

228138758 is digitally balanced in base 2, 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.

It is a Curzon number.

It is a congruent number.

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, 122798 + ... + 124641.

It is an arithmetic number, because the mean of its divisors is an integer number (42868980).

Almost surely, 2^228138758 is an apocalyptic number.

228138758 is a deficient number, since it is larger than the sum of its proper divisors (114813082).

228138758 is a wasteful number, since it uses less digits than its factorization.

228138758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247902.

The product of its digits is 215040, while the sum is 44.

The square root of 228138758 is about 15104.2629081991. The cubic root of 228138758 is about 611.0353803701.

The spelling of 228138758 in words is "two hundred twenty-eight million, one hundred thirty-eight thousand, seven hundred fifty-eight".