20675384 has 16 divisors (see below), whose sum is σ = 39111120. Its totient is φ = 10245760.

The previous prime is 20675381. The next prime is 20675399. The reversal of 20675384 is 48357602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20675381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10532 + ... + 12339.

It is an arithmetic number, because the mean of its divisors is an integer number (2444445).

Almost surely, 2^20675384 is an apocalyptic number.

It is an amenable number.

20675384 is a deficient number, since it is larger than the sum of its proper divisors (18435736).

20675384 is a wasteful number, since it uses less digits than its factorization.

20675384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22990 (or 22986 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 20675384 is about 4547.0192434165. The cubic root of 20675384 is about 274.4634563270.

The spelling of 20675384 in words is "twenty million, six hundred seventy-five thousand, three hundred eighty-four".