20082905 has 16 divisors (see below), whose sum is σ = 25531200. Its totient is φ = 15122880.

The previous prime is 20082893. The next prime is 20082911. The reversal of 20082905 is 50928002.

It is not a de Polignac number, because 20082905 - 2¹⁶ = 20017369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16415 + ... + 17595.

It is an arithmetic number, because the mean of its divisors is an integer number (1595700).

Almost surely, 2^20082905 is an apocalyptic number.

It is an amenable number.

20082905 is a deficient number, since it is larger than the sum of its proper divisors (5448295).

20082905 is a wasteful number, since it uses less digits than its factorization.

20082905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 20082905 is about 4481.3954299972. The cubic root of 20082905 is about 271.8163092583.

It can be divided in two parts, 2008 and 2905, that added together give a cube (4913 = 17³).

The spelling of 20082905 in words is "twenty million, eighty-two thousand, nine hundred five".