16396624 has 20 divisors (see below), whose sum is σ = 32628244. Its totient is φ = 7976448.

The previous prime is 16396621. The next prime is 16396657. The reversal of 16396624 is 42669361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6411024 + 9985600 = 2532^2 + 3160^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16396621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13257 + ... + 14440.

Almost surely, 2^16396624 is an apocalyptic number.

It is an amenable number.

16396624 is a deficient number, since it is larger than the sum of its proper divisors (16231620).

16396624 is a wasteful number, since it uses less digits than its factorization.

16396624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27742 (or 27736 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 16396624 is about 4049.2745029202. The cubic root of 16396624 is about 254.0493838301.

It can be divided in two parts, 16396 and 624, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 16396624 in words is "sixteen million, three hundred ninety-six thousand, six hundred twenty-four".