20710072 has 16 divisors (see below), whose sum is σ = 39018600. Its totient is φ = 10305120.

The previous prime is 20710037. The next prime is 20710093. The reversal of 20710072 is 27001702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4447 + ... + 7822.

Almost surely, 2^20710072 is an apocalyptic number.

It is an amenable number.

20710072 is a deficient number, since it is larger than the sum of its proper divisors (18308528).

20710072 is a wasteful number, since it uses less digits than its factorization.

20710072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12486 (or 12482 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 20710072 is about 4550.8320118414. The cubic root of 20710072 is about 274.6168636988.

Adding to 20710072 its reverse (27001702), we get a palindrome (47711774).

The spelling of 20710072 in words is "twenty million, seven hundred ten thousand, seventy-two".