16628630 has 8 divisors (see below), whose sum is σ = 29931552. Its totient is φ = 6651448.

The previous prime is 16628603. The next prime is 16628641. The reversal of 16628630 is 3682661.

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

It is a super-2 number, since 2×16628630² = 553022671353800, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

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, 831422 + ... + 831441.

It is an arithmetic number, because the mean of its divisors is an integer number (3741444).

Almost surely, 2^16628630 is an apocalyptic number.

16628630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16628630 is a deficient number, since it is larger than the sum of its proper divisors (13302922).

16628630 is a wasteful number, since it uses less digits than its factorization.

16628630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662870.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 16628630 is about 4077.8217224396. The cubic root of 16628630 is about 255.2420104089.

The spelling of 16628630 in words is "sixteen million, six hundred twenty-eight thousand, six hundred thirty".