16344436 has 6 divisors (see below), whose sum is σ = 28602770. Its totient is φ = 8172216.

The previous prime is 16344431. The next prime is 16344439. The reversal of 16344436 is 63444361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15523600 + 820836 = 3940^2 + 906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16344398 and 16344407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16344431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2043051 + ... + 2043058.

Almost surely, 2^16344436 is an apocalyptic number.

It is an amenable number.

16344436 is a deficient number, since it is larger than the sum of its proper divisors (12258334).

16344436 is a wasteful number, since it uses less digits than its factorization.

16344436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086113 (or 4086111 counting only the distinct ones).

The product of its digits is 20736, while the sum is 31.

The square root of 16344436 is about 4042.8252497480. The cubic root of 16344436 is about 253.7795636404.

Adding to 16344436 its reverse (63444361), we get a palindrome (79788797).

The spelling of 16344436 in words is "sixteen million, three hundred forty-four thousand, four hundred thirty-six".