16628629 has 16 divisors (see below), whose sum is σ = 18345600. Its totient is φ = 15011136.

The previous prime is 16628603. The next prime is 16628641. The reversal of 16628629 is 92682661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16628629 - 2¹⁵ = 16595861 is a prime.

It is a super-2 number, since 2×16628629² = 553022604839282, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16628591 and 16628600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16629629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 56607 + ... + 56899.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600).

Almost surely, 2^16628629 is an apocalyptic number.

16628629 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16628629 is a deficient number, since it is larger than the sum of its proper divisors (1716971).

16628629 is a wasteful number, since it uses less digits than its factorization.

16628629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

The product of its digits is 62208, while the sum is 40.

The square root of 16628629 is about 4077.8215998251. The cubic root of 16628629 is about 255.2420052924.

The spelling of 16628629 in words is "sixteen million, six hundred twenty-eight thousand, six hundred twenty-nine".