16620026 has 8 divisors (see below), whose sum is σ = 25019604. Its totient is φ = 8280160.

The previous prime is 16620017. The next prime is 16620049. The reversal of 16620026 is 62002661.

It can be written as a sum of positive squares in 2 ways, for example, as 16394401 + 225625 = 4049^2 + 475^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 16619983 and 16620010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14225 + ... + 15348.

Almost surely, 2^16620026 is an apocalyptic number.

16620026 is a deficient number, since it is larger than the sum of its proper divisors (8399578).

16620026 is a wasteful number, since it uses less digits than its factorization.

16620026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29856.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 16620026 is about 4076.7666109308. The cubic root of 16620026 is about 255.1979803006.

Adding to 16620026 its reverse (62002661), we get a palindrome (78622687).

The spelling of 16620026 in words is "sixteen million, six hundred twenty thousand, twenty-six".