20348736 has 28 divisors (see below), whose sum is σ = 53839872. Its totient is φ = 6782848.

The previous prime is 20348729. The next prime is 20348737. The reversal of 20348736 is 63784302.

It is a junction number, because it is equal to n+sod(n) for n = 20348697 and 20348706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20348737) 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, 52800 + ... + 53183.

Almost surely, 2^20348736 is an apocalyptic number.

It is an amenable number.

20348736 is an abundant number, since it is smaller than the sum of its proper divisors (33491136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20348736 is a wasteful number, since it uses less digits than its factorization.

20348736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105998 (or 105988 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 20348736 is about 4510.9573263333. The cubic root of 20348736 is about 273.0103714076.

The spelling of 20348736 in words is "twenty million, three hundred forty-eight thousand, seven hundred thirty-six".