20532807 has 12 divisors (see below), whose sum is σ = 29698240. Its totient is φ = 13670208.

The previous prime is 20532803. The next prime is 20532823. The reversal of 20532807 is 70823502.

It is not a de Polignac number, because 20532807 - 2² = 20532803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10794 + ... + 12552.

Almost surely, 2^20532807 is an apocalyptic number.

20532807 is a deficient number, since it is larger than the sum of its proper divisors (9165433).

20532807 is a wasteful number, since it uses less digits than its factorization.

20532807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062 (or 3059 counting only the distinct ones).

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

The square root of 20532807 is about 4531.3140478232. The cubic root of 20532807 is about 273.8311025101.

The spelling of 20532807 in words is "twenty million, five hundred thirty-two thousand, eight hundred seven".