20704252 has 12 divisors (see below), whose sum is σ = 37003680. Its totient is φ = 10131776.

The previous prime is 20704219. The next prime is 20704253. The reversal of 20704252 is 25240702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54877 + ... + 55252.

It is an arithmetic number, because the mean of its divisors is an integer number (3083640).

Almost surely, 2^20704252 is an apocalyptic number.

It is an amenable number.

20704252 is a deficient number, since it is larger than the sum of its proper divisors (16299428).

20704252 is a wasteful number, since it uses less digits than its factorization.

20704252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110180 (or 110178 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 20704252 is about 4550.1925233994. The cubic root of 20704252 is about 274.5911367661.

Adding to 20704252 its reverse (25240702), we get a palindrome (45944954).

The spelling of 20704252 in words is "twenty million, seven hundred four thousand, two hundred fifty-two".