8239136 has 12 divisors (see below), whose sum is σ = 16220862. Its totient is φ = 4119552.

The previous prime is 8239117. The next prime is 8239139. The reversal of 8239136 is 6319328.

It can be written as a sum of positive squares in only one way, i.e., 8179600 + 59536 = 2860^2 + 244^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 257473 = 8239136 / (8 + 2 + 3 + 9 + 1 + 3 + 6).

It is not an unprimeable number, because it can be changed into a prime (8239139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128705 + ... + 128768.

Almost surely, 2^8239136 is an apocalyptic number.

It is an amenable number.

8239136 is a deficient number, since it is larger than the sum of its proper divisors (7981726).

8239136 is a wasteful number, since it uses less digits than its factorization.

8239136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257483 (or 257475 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 8239136 is about 2870.3895206052. The cubic root of 8239136 is about 201.9732670567.

The spelling of 8239136 in words is "eight million, two hundred thirty-nine thousand, one hundred thirty-six".