9780238671 has 16 divisors (see below), whose sum is σ = 14923743744. Its totient is φ = 5581011744.

The previous prime is 9780238651. The next prime is 9780238679. The reversal of 9780238671 is 1768320879.

It is not a de Polignac number, because 9780238671 - 2⁶ = 9780238607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780238679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305040 + ... + 335573.

It is an arithmetic number, because the mean of its divisors is an integer number (932733984).

Almost surely, 2^9780238671 is an apocalyptic number.

9780238671 is a deficient number, since it is larger than the sum of its proper divisors (5143505073).

9780238671 is a wasteful number, since it uses less digits than its factorization.

9780238671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641350.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 9780238671 is about 98895.0892157947. The cubic root of 9780238671 is about 2138.5356003921.

The spelling of 9780238671 in words is "nine billion, seven hundred eighty million, two hundred thirty-eight thousand, six hundred seventy-one".