20300355 has 16 divisors (see below), whose sum is σ = 36089760. Its totient is φ = 10826784.

The previous prime is 20300347. The next prime is 20300411. The reversal of 20300355 is 55300302.

It is not a de Polignac number, because 20300355 - 2³ = 20300347 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75052 + ... + 75321.

It is an arithmetic number, because the mean of its divisors is an integer number (2255610).

Almost surely, 2^20300355 is an apocalyptic number.

20300355 is a deficient number, since it is larger than the sum of its proper divisors (15789405).

20300355 is a wasteful number, since it uses less digits than its factorization.

20300355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150387 (or 150381 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 20300355 is about 4505.5915260929. The cubic root of 20300355 is about 272.7938305737.

Adding to 20300355 its reverse (55300302), we get a palindrome (75600657).

The spelling of 20300355 in words is "twenty million, three hundred thousand, three hundred fifty-five".