20507338 has 16 divisors (see below), whose sum is σ = 33125760. Its totient is φ = 9486016.

The previous prime is 20507323. The next prime is 20507351. The reversal of 20507338 is 83370502.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3106 + ... + 7117.

It is an arithmetic number, because the mean of its divisors is an integer number (2070360).

Almost surely, 2^20507338 is an apocalyptic number.

20507338 is a deficient number, since it is larger than the sum of its proper divisors (12618422).

20507338 is a wasteful number, since it uses less digits than its factorization.

20507338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10301.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20507338 is about 4528.5028431039. The cubic root of 20507338 is about 273.7178351595.

The spelling of 20507338 in words is "twenty million, five hundred seven thousand, three hundred thirty-eight".