8238381 has 12 divisors (see below), whose sum is σ = 11594592. Its totient is φ = 5202504.

The previous prime is 8238371. The next prime is 8238389. The reversal of 8238381 is 1838328.

8238381 = T₆ + T₇ + ... + T₃₆₆.

It is not a de Polignac number, because 8238381 - 2⁹ = 8237869 is a prime.

It is a super-2 number, since 2×8238381² = 135741843002322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8238389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2721 + ... + 4886.

It is an arithmetic number, because the mean of its divisors is an integer number (966216).

Almost surely, 2^8238381 is an apocalyptic number.

It is an amenable number.

8238381 is a deficient number, since it is larger than the sum of its proper divisors (3356211).

8238381 is a wasteful number, since it uses less digits than its factorization.

8238381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648 (or 7629 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 8238381 is about 2870.2580023406. The cubic root of 8238381 is about 201.9670975394.

The spelling of 8238381 in words is "eight million, two hundred thirty-eight thousand, three hundred eighty-one".