20355896 has 16 divisors (see below), whose sum is σ = 41637240. Its totient is φ = 9252640.

The previous prime is 20355893. The next prime is 20355917. The reversal of 20355896 is 69855302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355893) 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, 115571 + ... + 115746.

Almost surely, 2^20355896 is an apocalyptic number.

It is an amenable number.

20355896 is an abundant number, since it is smaller than the sum of its proper divisors (21281344).

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

20355896 is a wasteful number, since it uses less digits than its factorization.

20355896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231334 (or 231330 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 20355896 is about 4511.7508796475. The cubic root of 20355896 is about 273.0423885483.

The spelling of 20355896 in words is "twenty million, three hundred fifty-five thousand, eight hundred ninety-six".