20660152 has 16 divisors (see below), whose sum is σ = 39115440. Its totient is φ = 10229376.

The previous prime is 20660137. The next prime is 20660153. The reversal of 20660152 is 25106602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660153) 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, 11713 + ... + 13360.

It is an arithmetic number, because the mean of its divisors is an integer number (2444715).

Almost surely, 2^20660152 is an apocalyptic number.

It is an amenable number.

20660152 is a deficient number, since it is larger than the sum of its proper divisors (18455288).

20660152 is a wasteful number, since it uses less digits than its factorization.

20660152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25182 (or 25178 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20660152 is about 4545.3439913828. The cubic root of 20660152 is about 274.3960387248.

Adding to 20660152 its reverse (25106602), we get a palindrome (45766754).

The spelling of 20660152 in words is "twenty million, six hundred sixty thousand, one hundred fifty-two".