238426647 has 4 divisors (see below), whose sum is σ = 317902200. Its totient is φ = 158951096.

The previous prime is 238426621. The next prime is 238426663. The reversal of 238426647 is 746624832.

238426647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 238426647 - 2¹² = 238422551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238426599 and 238426608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238426667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39737772 + ... + 39737777.

It is an arithmetic number, because the mean of its divisors is an integer number (79475550).

Almost surely, 2^238426647 is an apocalyptic number.

238426647 is a deficient number, since it is larger than the sum of its proper divisors (79475553).

238426647 is an equidigital number, since it uses as much as digits as its factorization.

238426647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79475552.

The product of its digits is 387072, while the sum is 42.

The square root of 238426647 is about 15441.0701377851. The cubic root of 238426647 is about 620.0855301706.

The spelling of 238426647 in words is "two hundred thirty-eight million, four hundred twenty-six thousand, six hundred forty-seven".