228077238 has 16 divisors (see below), whose sum is σ = 456836400. Its totient is φ = 75912096.

The previous prime is 228077233. The next prime is 228077243. The reversal of 228077238 is 832770822.

It is an interprime number because it is at equal distance from previous prime (228077233) and next prime (228077243).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 228077196 and 228077205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228077233) 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, 24013 + ... + 32136.

It is an arithmetic number, because the mean of its divisors is an integer number (28552275).

Almost surely, 2^228077238 is an apocalyptic number.

228077238 is an abundant number, since it is smaller than the sum of its proper divisors (228759162).

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

228077238 is a wasteful number, since it uses less digits than its factorization.

228077238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56831.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 228077238 is about 15102.2262597274. The cubic root of 228077238 is about 610.9804514074.

The spelling of 228077238 in words is "two hundred twenty-eight million, seventy-seven thousand, two hundred thirty-eight".