238828667401 has 3 divisors (see below), whose sum is σ = 238829156103. Its totient is φ = 238828178700.

The previous prime is 238828667387. The next prime is 238828667419. The reversal of 238828667401 is 104766828832.

The square root of 238828667401 is 488701.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 238633227001 + 195440400 = 488501^2 + 13980^2 .

It is not a de Polignac number, because 238828667401 - 2⁹ = 238828666889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238828667501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 244351 + ... + 733051.

It is an arithmetic number, because the mean of its divisors is an integer number (79609718701).

Almost surely, 2^238828667401 is an apocalyptic number.

238828667401 is the 488701-st square number.

238828667401 is the 244351-st centered octagonal number.

It is an amenable number.

238828667401 is a deficient number, since it is larger than the sum of its proper divisors (488702).

238828667401 is an frugal number, since it uses more digits than its factorization.

238828667401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977402 (or 488701 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 238828667401 in words is "two hundred thirty-eight billion, eight hundred twenty-eight million, six hundred sixty-seven thousand, four hundred one".