20000036 has 36 divisors (see below), whose sum is σ = 41349168. Its totient is φ = 8437968.

The previous prime is 20000033. The next prime is 20000047. The reversal of 20000036 is 63000002.

It is a happy number.

20000036 is a modest number, since divided by 36 gives 20 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 19999981 and 20000026.

It is not an unprimeable number, because it can be changed into a prime (20000033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12371 + ... + 13893.

It is an arithmetic number, because the mean of its divisors is an integer number (1148588).

Almost surely, 2^20000036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20674584).

20000036 is an abundant number, since it is smaller than the sum of its proper divisors (21349132).

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

20000036 is a wasteful number, since it uses less digits than its factorization.

20000036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20000036 is about 4472.1399799201. The cubic root of 20000036 is about 271.4419245244.

Adding to 20000036 its reverse (63000002), we get a palindrome (83000038).

The spelling of 20000036 in words is "twenty million, thirty-six", and thus it is an aban number and an uban number.