20006072 has 8 divisors (see below), whose sum is σ = 37511400. Its totient is φ = 10003032.

The previous prime is 20006057. The next prime is 20006083. The reversal of 20006072 is 27060002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20006072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250372 + ... + 1250387.

It is an arithmetic number, because the mean of its divisors is an integer number (4688925).

Almost surely, 2^20006072 is an apocalyptic number.

It is an amenable number.

20006072 is a deficient number, since it is larger than the sum of its proper divisors (17505328).

20006072 is a wasteful number, since it uses less digits than its factorization.

20006072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500765 (or 2500761 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20006072 is about 4472.8147737191. The cubic root of 20006072 is about 271.4692287863.

Adding to 20006072 its reverse (27060002), we get a palindrome (47066074).

The spelling of 20006072 in words is "twenty million, six thousand, seventy-two".