20801703 has 24 divisors (see below), whose sum is σ = 30436560. Its totient is φ = 12629760.

The previous prime is 20801701. The next prime is 20801707. The reversal of 20801703 is 30710802.

It is not a de Polignac number, because 20801703 - 2¹ = 20801701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20801703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20801701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44893 + ... + 45353.

It is an arithmetic number, because the mean of its divisors is an integer number (1268190).

Almost surely, 2^20801703 is an apocalyptic number.

20801703 is a deficient number, since it is larger than the sum of its proper divisors (9634857).

20801703 is a wasteful number, since it uses less digits than its factorization.

20801703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20801703 is about 4560.8884003010. Note that the first 3 decimals coincide. The cubic root of 20801703 is about 275.0212787942.

Subtracting 20801703 from its reverse (30710802), we obtain a palindrome (9909099).

The spelling of 20801703 in words is "twenty million, eight hundred one thousand, seven hundred three".