238722 has 16 divisors (see below), whose sum is σ = 520992. Its totient is φ = 72320.

The previous prime is 238709. The next prime is 238723. The reversal of 238722 is 227832.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 238692 and 238701.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 238722.

It is not an unprimeable number, because it can be changed into a prime (238723) by changing a digit.

238722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1743 + ... + 1874.

It is an arithmetic number, because the mean of its divisors is an integer number (32562).

2²³⁸⁷²² is an apocalyptic number.

238722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

238722 is an abundant number, since it is smaller than the sum of its proper divisors (282270).

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

238722 is a wasteful number, since it uses less digits than its factorization.

238722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633.

The product of its digits is 1344, while the sum is 24.

The square root of 238722 is about 488.5918542096. The cubic root of 238722 is about 62.0341469893.

The spelling of 238722 in words is "two hundred thirty-eight thousand, seven hundred twenty-two".