228507838 has 16 divisors (see below), whose sum is σ = 369416880. Its totient is φ = 105382656.

The previous prime is 228507827. The next prime is 228507859. The reversal of 228507838 is 838705822.

It is a junction number, because it is equal to n+sod(n) for n = 228507794 and 228507803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41533 + ... + 46711.

It is an arithmetic number, because the mean of its divisors is an integer number (23088555).

Almost surely, 2^228507838 is an apocalyptic number.

228507838 is a deficient number, since it is larger than the sum of its proper divisors (140909042).

228507838 is a wasteful number, since it uses less digits than its factorization.

228507838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 228507838 is about 15116.4757136047. The cubic root of 228507838 is about 611.3647112773.

The spelling of 228507838 in words is "two hundred twenty-eight million, five hundred seven thousand, eight hundred thirty-eight".