20652147 has 24 divisors (see below), whose sum is σ = 31346640. Its totient is φ = 13083840.

The previous prime is 20652133. The next prime is 20652157. The reversal of 20652147 is 74125602.

20652147 is a `hidden beast` number, since 2 + 0 + 652 + 1 + 4 + 7 = 666.

It is not a de Polignac number, because 20652147 - 2¹¹ = 20650099 is a prime.

It is a super-2 number, since 2×20652147² = 853022351419218, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20652147.

It is not an unprimeable number, because it can be changed into a prime (20652157) 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, 16897 + ... + 18077.

It is an arithmetic number, because the mean of its divisors is an integer number (1306110).

Almost surely, 2^20652147 is an apocalyptic number.

20652147 is a deficient number, since it is larger than the sum of its proper divisors (10694493).

20652147 is a wasteful number, since it uses less digits than its factorization.

20652147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20652147 is about 4544.4633346524. The cubic root of 20652147 is about 274.3605949062.

Adding to 20652147 its reverse (74125602), we get a palindrome (94777749).

The spelling of 20652147 in words is "twenty million, six hundred fifty-two thousand, one hundred forty-seven".