20628632 has 16 divisors (see below), whose sum is σ = 39209640. Its totient is φ = 10172736.

The previous prime is 20628613. The next prime is 20628653. The reversal of 20628632 is 23682602.

It is a junction number, because it is equal to n+sod(n) for n = 20628595 and 20628604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17078 + ... + 18245.

Almost surely, 2^20628632 is an apocalyptic number.

It is an amenable number.

20628632 is a deficient number, since it is larger than the sum of its proper divisors (18581008).

20628632 is a wasteful number, since it uses less digits than its factorization.

20628632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35402 (or 35398 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 20628632 is about 4541.8753835833. The cubic root of 20628632 is about 274.2564243070.

The spelling of 20628632 in words is "twenty million, six hundred twenty-eight thousand, six hundred thirty-two".