7891136 has 42 divisors (see below), whose sum is σ = 17228820. Its totient is φ = 3583360.

The previous prime is 7891123. The next prime is 7891141. The reversal of 7891136 is 6311987.

It is a junction number, because it is equal to n+sod(n) for n = 7891096 and 7891105.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7235 + ... + 8253.

It is an arithmetic number, because the mean of its divisors is an integer number (410210).

Almost surely, 2^7891136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7891136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8614410).

7891136 is an abundant number, since it is smaller than the sum of its proper divisors (9337684).

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

7891136 is a wasteful number, since it uses less digits than its factorization.

7891136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1032 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 7891136 is about 2809.1165871142. The cubic root of 7891136 is about 199.0886535459.

The spelling of 7891136 in words is "seven million, eight hundred ninety-one thousand, one hundred thirty-six".