8007138 has 12 divisors (see below), whose sum is σ = 17348838. Its totient is φ = 2669040.

The previous prime is 8007127. The next prime is 8007143. The reversal of 8007138 is 8317008.

It can be written as a sum of positive squares in only one way, i.e., 6335289 + 1671849 = 2517^2 + 1293^2 .

It is a super-2 number, since 2×8007138² = 128228517902088, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222403 + ... + 222438.

Almost surely, 2^8007138 is an apocalyptic number.

8007138 is an abundant number, since it is smaller than the sum of its proper divisors (9341700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8007138 is a wasteful number, since it uses less digits than its factorization.

8007138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444849 (or 444846 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 8007138 is about 2829.6886754553. The cubic root of 8007138 is about 200.0594656508.

The spelling of 8007138 in words is "eight million, seven thousand, one hundred thirty-eight".