20801594 has 24 divisors (see below), whose sum is σ = 35112000. Its totient is φ = 9230760.

The previous prime is 20801593. The next prime is 20801597. The reversal of 20801594 is 49510802.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20801593) 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 11 ways as a sum of consecutive naturals, for example, 9407 + ... + 11405.

It is an arithmetic number, because the mean of its divisors is an integer number (1463000).

Almost surely, 2^20801594 is an apocalyptic number.

20801594 is a deficient number, since it is larger than the sum of its proper divisors (14310406).

20801594 is a wasteful number, since it uses less digits than its factorization.

20801594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066 (or 2055 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 20801594 is about 4560.8764508590. The cubic root of 20801594 is about 275.0207984270.

The spelling of 20801594 in words is "twenty million, eight hundred one thousand, five hundred ninety-four".