238778 has 4 divisors (see below), whose sum is σ = 358170. Its totient is φ = 119388.

The previous prime is 238759. The next prime is 238781. The reversal of 238778 is 877832.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 208849 + 29929 = 457^2 + 173^2 .

It is a Curzon number.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59693 + ... + 59696.

2²³⁸⁷⁷⁸ is an apocalyptic number.

238778 is a deficient number, since it is larger than the sum of its proper divisors (119392).

238778 is a wasteful number, since it uses less digits than its factorization.

238778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119391.

The product of its digits is 18816, while the sum is 35.

The square root of 238778 is about 488.6491583949. The cubic root of 238778 is about 62.0389973182.

The spelling of 238778 in words is "two hundred thirty-eight thousand, seven hundred seventy-eight".