20752845 has 16 divisors (see below), whose sum is σ = 34952640. Its totient is φ = 10485504.

The previous prime is 20752843. The next prime is 20752873. The reversal of 20752845 is 54825702.

It is not a de Polignac number, because 20752845 - 2¹ = 20752843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36124 + ... + 36693.

It is an arithmetic number, because the mean of its divisors is an integer number (2184540).

Almost surely, 2^20752845 is an apocalyptic number.

It is an amenable number.

20752845 is a deficient number, since it is larger than the sum of its proper divisors (14199795).

20752845 is a wasteful number, since it uses less digits than its factorization.

20752845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72844.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 20752845 is about 4555.5290581885. The cubic root of 20752845 is about 274.8057912541.

The spelling of 20752845 in words is "twenty million, seven hundred fifty-two thousand, eight hundred forty-five".