8091432 has 48 divisors (see below), whose sum is σ = 22456980. Its totient is φ = 2630400.

The previous prime is 8091431. The next prime is 8091443. The reversal of 8091432 is 2341908.

It can be written as a sum of positive squares in 2 ways, for example, as 6937956 + 1153476 = 2634^2 + 1074^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8091396 and 8091405.

It is not an unprimeable number, because it can be changed into a prime (8091431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1582 + ... + 4322.

Almost surely, 2^8091432 is an apocalyptic number.

8091432 is a gapful number since it is divisible by the number (82) 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 8091432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11228490).

8091432 is an abundant number, since it is smaller than the sum of its proper divisors (14365548).

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

8091432 is a wasteful number, since it uses less digits than its factorization.

8091432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794 (or 2787 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 8091432 is about 2844.5442517212. The cubic root of 8091432 is about 200.7590489127.

The spelling of 8091432 in words is "eight million, ninety-one thousand, four hundred thirty-two".