238297236 has 12 divisors (see below), whose sum is σ = 556026912. Its totient is φ = 79432408.

The previous prime is 238297223. The next prime is 238297237. The reversal of 238297236 is 632792832.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238297237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9929040 + ... + 9929063.

It is an arithmetic number, because the mean of its divisors is an integer number (46335576).

Almost surely, 2^238297236 is an apocalyptic number.

It is an amenable number.

238297236 is an abundant number, since it is smaller than the sum of its proper divisors (317729676).

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

238297236 is a wasteful number, since it uses less digits than its factorization.

238297236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19858110 (or 19858108 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 238297236 is about 15436.8790887277. The cubic root of 238297236 is about 619.9733217796.

The spelling of 238297236 in words is "two hundred thirty-eight million, two hundred ninety-seven thousand, two hundred thirty-six".