238437 has 8 divisors (see below), whose sum is σ = 353280. Its totient is φ = 158940.

The previous prime is 238423. The next prime is 238439. The reversal of 238437 is 734832.

It is not a de Polignac number, because 238437 - 2⁶ = 238373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8831 = 238437 / (2 + 3 + 8 + 4 + 3 + 7).

It is an Ulam number.

238437 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 238437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238439) 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, 4389 + ... + 4442.

It is an arithmetic number, because the mean of its divisors is an integer number (44160).

2²³⁸⁴³⁷ is an apocalyptic number.

238437 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

238437 is a deficient number, since it is larger than the sum of its proper divisors (114843).

238437 is an equidigital number, since it uses as much as digits as its factorization.

238437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8840 (or 8834 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 238437 is about 488.3001126357. The cubic root of 238437 is about 62.0094505192.

The spelling of 238437 in words is "two hundred thirty-eight thousand, four hundred thirty-seven".