238774228 has 24 divisors (see below), whose sum is σ = 520962624. Its totient is φ = 93028800.

The previous prime is 238774223. The next prime is 238774243. The reversal of 238774228 is 822477832.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238774223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387313 + ... + 387928.

It is an arithmetic number, because the mean of its divisors is an integer number (21706776).

Almost surely, 2^238774228 is an apocalyptic number.

238774228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

238774228 is an abundant number, since it is smaller than the sum of its proper divisors (282188396).

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

238774228 is a wasteful number, since it uses less digits than its factorization.

238774228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775263 (or 775261 counting only the distinct ones).

The product of its digits is 301056, while the sum is 43.

The square root of 238774228 is about 15452.3211201424. The cubic root of 238774228 is about 620.3867063774.

The spelling of 238774228 in words is "two hundred thirty-eight million, seven hundred seventy-four thousand, two hundred twenty-eight".