20675632 has 20 divisors (see below), whose sum is σ = 40544280. Its totient is φ = 10212608.

The previous prime is 20675617. The next prime is 20675639. The reversal of 20675632 is 23657602.

It is a junction number, because it is equal to n+sod(n) for n = 20675594 and 20675603.

It is not an unprimeable number, because it can be changed into a prime (20675639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6457 + ... + 9112.

It is an arithmetic number, because the mean of its divisors is an integer number (2027214).

Almost surely, 2^20675632 is an apocalyptic number.

It is an amenable number.

20675632 is a deficient number, since it is larger than the sum of its proper divisors (19868648).

20675632 is a wasteful number, since it uses less digits than its factorization.

20675632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15660 (or 15654 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 20675632 is about 4547.0465139473. The cubic root of 20675632 is about 274.4645537136.

The spelling of 20675632 in words is "twenty million, six hundred seventy-five thousand, six hundred thirty-two".