237978 has 40 divisors (see below), whose sum is σ = 579348. Its totient is φ = 72576.

The previous prime is 237977. The next prime is 237997. The reversal of 237978 is 879732.

237978 is nontrivially palindromic in base 14.

237978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 178929 + 59049 = 423^2 + 243^2 .

It is a Curzon number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (237971) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2050 + ... + 2162.

2²³⁷⁹⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 237978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289674).

237978 is an abundant number, since it is smaller than the sum of its proper divisors (341370).

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

237978 is a wasteful number, since it uses less digits than its factorization.

237978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 131 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 237978 is about 487.8298883832. The cubic root of 237978 is about 61.9696348012.

It can be divided in two parts, 23 and 7978, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 237978 in words is "two hundred thirty-seven thousand, nine hundred seventy-eight".