20907652 has 12 divisors (see below), whose sum is σ = 37279116. Its totient is φ = 10256480.

The previous prime is 20907647. The next prime is 20907659. The reversal of 20907652 is 25670902.

It can be written as a sum of positive squares in 2 ways, for example, as 19149376 + 1758276 = 4376^2 + 1326^2 .

It is not an unprimeable number, because it can be changed into a prime (20907659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49099 + ... + 49522.

It is an arithmetic number, because the mean of its divisors is an integer number (3106593).

Almost surely, 2^20907652 is an apocalyptic number.

It is an amenable number.

20907652 is a deficient number, since it is larger than the sum of its proper divisors (16371464).

20907652 is a wasteful number, since it uses less digits than its factorization.

20907652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98678 (or 98676 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 20907652 is about 4572.4886003138. The cubic root of 20907652 is about 275.4874088863.

The spelling of 20907652 in words is "twenty million, nine hundred seven thousand, six hundred fifty-two".