7840136 has 16 divisors (see below), whose sum is σ = 14731200. Its totient is φ = 3911824.

The previous prime is 7840081. The next prime is 7840153. The reversal of 7840136 is 6310487.

It is a super-2 number, since 2×7840136² = 122935464996992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7840099 and 7840108.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5285 + ... + 6603.

It is an arithmetic number, because the mean of its divisors is an integer number (920700).

Almost surely, 2^7840136 is an apocalyptic number.

It is an amenable number.

7840136 is a deficient number, since it is larger than the sum of its proper divisors (6891064).

7840136 is a wasteful number, since it uses less digits than its factorization.

7840136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2064 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 7840136 is about 2800.0242856090. The cubic root of 7840136 is about 198.6588263701.

The spelling of 7840136 in words is "seven million, eight hundred forty thousand, one hundred thirty-six".