3218432 has 44 divisors (see below), whose sum is σ = 7369200. Its totient is φ = 1376256.

The previous prime is 3218431. The next prime is 3218437. The reversal of 3218432 is 2348123.

It is a junction number, because it is equal to n+sod(n) for n = 3218398 and 3218407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3218431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6944 + ... + 7392.

Almost surely, 2^3218432 is an apocalyptic number.

3218432 is a gapful number since it is divisible by the number (32) 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 3218432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3684600).

3218432 is an abundant number, since it is smaller than the sum of its proper divisors (4150768).

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

3218432 is an equidigital number, since it uses as much as digits as its factorization.

3218432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 458 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 3218432 is about 1793.9988851725. The cubic root of 3218432 is about 147.6436520639.

It can be divided in two parts, 32 and 18432, that multiplied together give a square (589824 = 768²).

The spelling of 3218432 in words is "three million, two hundred eighteen thousand, four hundred thirty-two".