16326004 has 6 divisors (see below), whose sum is σ = 28570514. Its totient is φ = 8163000.

The previous prime is 16325999. The next prime is 16326007. The reversal of 16326004 is 40062361.

It can be written as a sum of positive squares in only one way, i.e., 11573604 + 4752400 = 3402^2 + 2180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16326007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040747 + ... + 2040754.

Almost surely, 2^16326004 is an apocalyptic number.

It is an amenable number.

16326004 is a deficient number, since it is larger than the sum of its proper divisors (12244510).

16326004 is a wasteful number, since it uses less digits than its factorization.

16326004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081505 (or 4081503 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 16326004 is about 4040.5450127427. The cubic root of 16326004 is about 253.6841300549.

Adding to 16326004 its reverse (40062361), we get a palindrome (56388365).

The spelling of 16326004 in words is "sixteen million, three hundred twenty-six thousand, four".