7899136 has 96 divisors (see below), whose sum is σ = 19656000. Its totient is φ = 3096576.

The previous prime is 7899127. The next prime is 7899137. The reversal of 7899136 is 6319987.

It is a junction number, because it is equal to n+sod(n) for n = 7899092 and 7899101.

It is not an unprimeable number, because it can be changed into a prime (7899137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272370 + ... + 272398.

It is an arithmetic number, because the mean of its divisors is an integer number (204750).

Almost surely, 2^7899136 is an apocalyptic number.

7899136 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7899136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9828000).

7899136 is an abundant number, since it is smaller than the sum of its proper divisors (11756864).

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

7899136 is a wasteful number, since it uses less digits than its factorization.

7899136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 57 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 7899136 is about 2810.5401616060. The cubic root of 7899136 is about 199.1559092323.

The spelling of 7899136 in words is "seven million, eight hundred ninety-nine thousand, one hundred thirty-six".