20846901 has 16 divisors (see below), whose sum is σ = 29715840. Its totient is φ = 12967680.

The previous prime is 20846869. The next prime is 20846921. The reversal of 20846901 is 10964802.

It is not a de Polignac number, because 20846901 - 2⁵ = 20846869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20846921) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 856 + ... + 6513.

It is an arithmetic number, because the mean of its divisors is an integer number (1857240).

Almost surely, 2^20846901 is an apocalyptic number.

It is an amenable number.

20846901 is a deficient number, since it is larger than the sum of its proper divisors (8868939).

20846901 is a wasteful number, since it uses less digits than its factorization.

20846901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7436.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20846901 is about 4565.8406673908. The cubic root of 20846901 is about 275.2203237100.

The spelling of 20846901 in words is "twenty million, eight hundred forty-six thousand, nine hundred one".