786432 has 38 divisors (see below), whose sum is σ = 2097148. Its totient is φ = 262144.

The previous prime is 786431. The next prime is 786433. The reversal of 786432 is 234687.

It is a Jordan-Polya number, since it can be written as 4! ⋅ (2!)¹⁵.

It is an interprime number because it is at equal distance from previous prime (786431) and next prime (786433).

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=64.

It is a nialpdrome in base 2, base 4, base 8 and base 16.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 786432.

It is not an unprimeable number, because it can be changed into a prime (786431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (2) of ones.

In principle, a polygon with 786432 sides can be constructed with ruler and compass.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262143 + 262144 + 262145.

786432 is a Friedman number, since it can be written as 768*4^(3+2), using all its digits and the basic arithmetic operations.

2⁷⁸⁶⁴³² 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 786432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048574).

786432 is an abundant number, since it is smaller than the sum of its proper divisors (1310716).

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

786432 is an frugal number, since it uses more digits than its factorization.

786432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39 (or 5 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 786432 is about 886.8100134753. The cubic root of 786432 is about 92.3039724997.

The spelling of 786432 in words is "seven hundred eighty-six thousand, four hundred thirty-two".