20348936 has 8 divisors (see below), whose sum is σ = 38154270. Its totient is φ = 10174464.

The previous prime is 20348921. The next prime is 20348953. The reversal of 20348936 is 63984302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20340100 + 8836 = 4510^2 + 94^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20348896 and 20348905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271801 + ... + 1271816.

Almost surely, 2^20348936 is an apocalyptic number.

It is an amenable number.

20348936 is a deficient number, since it is larger than the sum of its proper divisors (17805334).

20348936 is a wasteful number, since it uses less digits than its factorization.

20348936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543623 (or 2543619 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 20348936 is about 4510.9794945222. The cubic root of 20348936 is about 273.0112658431.

The spelling of 20348936 in words is "twenty million, three hundred forty-eight thousand, nine hundred thirty-six".