16628101 has 12 divisors (see below), whose sum is σ = 19491948. Its totient is φ = 14142912.

The previous prime is 16628099. The next prime is 16628111. The reversal of 16628101 is 10182661.

It can be written as a sum of positive squares in 2 ways, for example, as 9060100 + 7568001 = 3010^2 + 2751^2 .

It is not a de Polignac number, because 16628101 - 2¹ = 16628099 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16628111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5475 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (1624329).

Almost surely, 2^16628101 is an apocalyptic number.

It is an amenable number.

16628101 is a deficient number, since it is larger than the sum of its proper divisors (2863847).

16628101 is a wasteful number, since it uses less digits than its factorization.

16628101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 16628101 is about 4077.7568588625. The cubic root of 16628101 is about 255.2393037426.

The spelling of 16628101 in words is "sixteen million, six hundred twenty-eight thousand, one hundred one".