20066536 has 16 divisors (see below), whose sum is σ = 42999840. Its totient is φ = 8599920.

The previous prime is 20066533. The next prime is 20066539. The reversal of 20066536 is 63566002.

It is an interprime number because it is at equal distance from previous prime (20066533) and next prime (20066539).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (20066533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179110 + ... + 179221.

It is an arithmetic number, because the mean of its divisors is an integer number (2687490).

Almost surely, 2^20066536 is an apocalyptic number.

It is an amenable number.

20066536 is an abundant number, since it is smaller than the sum of its proper divisors (22933304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20066536 is a wasteful number, since it uses less digits than its factorization.

20066536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358344 (or 358340 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 20066536 is about 4479.5687292417. The cubic root of 20066536 is about 271.7424392917.

It can be divided in two parts, 20066 and 536, that added together give a palindrome (20602).

The spelling of 20066536 in words is "twenty million, sixty-six thousand, five hundred thirty-six".