20540308 has 12 divisors (see below), whose sum is σ = 36205120. Its totient is φ = 10195992.

The previous prime is 20540293. The next prime is 20540329. The reversal of 20540308 is 80304502.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 17916 + ... + 19027.

Almost surely, 2^20540308 is an apocalyptic number.

It is an amenable number.

20540308 is a deficient number, since it is larger than the sum of its proper divisors (15664812).

20540308 is a wasteful number, since it uses less digits than its factorization.

20540308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37086 (or 37084 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20540308 is about 4532.1416570977. The cubic root of 20540308 is about 273.8644435763.

The spelling of 20540308 in words is "twenty million, five hundred forty thousand, three hundred eight".