20536867 has 8 divisors (see below), whose sum is σ = 23417856. Its totient is φ = 17841792.

The previous prime is 20536847. The next prime is 20536889. The reversal of 20536867 is 76863502.

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 20536867 - 2¹¹ = 20534819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20536837) 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, 46243 + ... + 46684.

It is an arithmetic number, because the mean of its divisors is an integer number (2927232).

Almost surely, 2^20536867 is an apocalyptic number.

20536867 is a deficient number, since it is larger than the sum of its proper divisors (2880989).

20536867 is a wasteful number, since it uses less digits than its factorization.

20536867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92957.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 20536867 is about 4531.7620193474. The cubic root of 20536867 is about 273.8491497423.

The spelling of 20536867 in words is "twenty million, five hundred thirty-six thousand, eight hundred sixty-seven".