20141905 has 32 divisors (see below), whose sum is σ = 29196288. Its totient is φ = 13041600.

The previous prime is 20141899. The next prime is 20141917. The reversal of 20141905 is 50914102.

It is not a de Polignac number, because 20141905 - 2¹¹ = 20139857 is a prime.

It is a Duffinian 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 31 ways as a sum of consecutive naturals, for example, 105360 + ... + 105550.

It is an arithmetic number, because the mean of its divisors is an integer number (912384).

Almost surely, 2^20141905 is an apocalyptic number.

It is an amenable number.

20141905 is a deficient number, since it is larger than the sum of its proper divisors (9054383).

20141905 is a wasteful number, since it uses less digits than its factorization.

20141905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 20141905 is about 4487.9733733613. The cubic root of 20141905 is about 272.0822316610.

The spelling of 20141905 in words is "twenty million, one hundred forty-one thousand, nine hundred five".