20938396 has 6 divisors (see below), whose sum is σ = 36642200. Its totient is φ = 10469196.

The previous prime is 20938387. The next prime is 20938403. The reversal of 20938396 is 69383902.

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 as a sum of consecutive naturals, namely, 2617296 + ... + 2617303.

Almost surely, 2^20938396 is an apocalyptic number.

It is an amenable number.

20938396 is a deficient number, since it is larger than the sum of its proper divisors (15703804).

20938396 is a wasteful number, since it uses less digits than its factorization.

20938396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234603 (or 5234601 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 20938396 is about 4575.8492108023. The cubic root of 20938396 is about 275.6223744143.

The spelling of 20938396 in words is "twenty million, nine hundred thirty-eight thousand, three hundred ninety-six".