20000536 has 8 divisors (see below), whose sum is σ = 37501020. Its totient is φ = 10000264.

The previous prime is 20000531. The next prime is 20000537. The reversal of 20000536 is 63500002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250026 + ... + 1250041.

Almost surely, 2^20000536 is an apocalyptic number.

It is an amenable number.

20000536 is a deficient number, since it is larger than the sum of its proper divisors (17500484).

20000536 is a wasteful number, since it uses less digits than its factorization.

20000536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500073 (or 2500069 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20000536 is about 4472.1958812199. The cubic root of 20000536 is about 271.4441865176. Note that the first 3 decimals are identical.

Adding to 20000536 its reverse (63500002), we get a palindrome (83500538).

The spelling of 20000536 in words is "twenty million, five hundred thirty-six", and thus it is an aban number.