16216604 has 6 divisors (see below), whose sum is σ = 28379064. Its totient is φ = 8108300.

The previous prime is 16216591. The next prime is 16216609. The reversal of 16216604 is 40661261.

It is a happy number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16216609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027072 + ... + 2027079.

It is an arithmetic number, because the mean of its divisors is an integer number (4729844).

Almost surely, 2^16216604 is an apocalyptic number.

It is an amenable number.

16216604 is a deficient number, since it is larger than the sum of its proper divisors (12162460).

16216604 is a wasteful number, since it uses less digits than its factorization.

16216604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054155 (or 4054153 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 16216604 is about 4026.9844797317. The cubic root of 16216604 is about 253.1162167150.

Adding to 16216604 its reverse (40661261), we get a palindrome (56877865).

The spelling of 16216604 in words is "sixteen million, two hundred sixteen thousand, six hundred four".