16626020 has 12 divisors (see below), whose sum is σ = 34914684. Its totient is φ = 6650400.

The previous prime is 16625971. The next prime is 16626031. The reversal of 16626020 is 2062661.

It can be written as a sum of positive squares in 2 ways, for example, as 10445824 + 6180196 = 3232^2 + 2486^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415631 + ... + 415670.

It is an arithmetic number, because the mean of its divisors is an integer number (2909557).

Almost surely, 2^16626020 is an apocalyptic number.

16626020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16626020 is an abundant number, since it is smaller than the sum of its proper divisors (18288664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16626020 is a wasteful number, since it uses less digits than its factorization.

16626020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831310 (or 831308 counting only the distinct ones).

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

The square root of 16626020 is about 4077.5016860818. The cubic root of 16626020 is about 255.2286556004.

Adding to 16626020 its reverse (2062661), we get a palindrome (18688681).

The spelling of 16626020 in words is "sixteen million, six hundred twenty-six thousand, twenty".