3218436 has 81 divisors (see below), whose sum is σ = 9209109. Its totient is φ = 947232.

The previous prime is 3218431. The next prime is 3218437. The reversal of 3218436 is 6348123.

It is a happy number.

The square root of 3218436 is 1794.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 476100 + 2742336 = 690^2 + 1656^2 .

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 139921 + ... + 139943.

Almost surely, 2^3218436 is an apocalyptic number.

3218436 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

3218436 is the 1794-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3218436

3218436 is an abundant number, since it is smaller than the sum of its proper divisors (5990673).

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

3218436 is a wasteful number, since it uses less digits than its factorization.

3218436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 41 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The cubic root of 3218436 is about 147.6437132297.

The spelling of 3218436 in words is "three million, two hundred eighteen thousand, four hundred thirty-six".