4091136 has 72 divisors (see below), whose sum is σ = 12460224. Its totient is φ = 1167360.

The previous prime is 4091083. The next prime is 4091161. The reversal of 4091136 is 6311904.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4996 + ... + 5756.

Almost surely, 2^4091136 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 4091136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6230112).

4091136 is an abundant number, since it is smaller than the sum of its proper divisors (8369088).

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

4091136 is an equidigital number, since it uses as much as digits as its factorization.

4091136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 4091136 is about 2022.6556800405. The cubic root of 4091136 is about 159.9366415807.

The spelling of 4091136 in words is "four million, ninety-one thousand, one hundred thirty-six".