20532109 has 8 divisors (see below), whose sum is σ = 22155392. Its totient is φ = 18915120.

The previous prime is 20532101. The next prime is 20532119. The reversal of 20532109 is 90123502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20532109 - 2³ = 20532101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20532109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532101) 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 7 ways as a sum of consecutive naturals, for example, 6952 + ... + 9454.

It is an arithmetic number, because the mean of its divisors is an integer number (2769424).

Almost surely, 2^20532109 is an apocalyptic number.

It is an amenable number.

20532109 is a deficient number, since it is larger than the sum of its proper divisors (1623283).

20532109 is a wasteful number, since it uses less digits than its factorization.

20532109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3147.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20532109 is about 4531.2370275676. The cubic root of 20532109 is about 273.8279995690.

The spelling of 20532109 in words is "twenty million, five hundred thirty-two thousand, one hundred nine".