20100036 has 72 divisors (see below), whose sum is σ = 52433920. Its totient is φ = 5987520.

The previous prime is 20100023. The next prime is 20100053. The reversal of 20100036 is 63000102.

It is a super-2 number, since 2×20100036² = 808022894402592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20099994 and 20100030.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158205 + ... + 158331.

Almost surely, 2^20100036 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 20100036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26216960).

20100036 is an abundant number, since it is smaller than the sum of its proper divisors (32333884).

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

20100036 is a wasteful number, since it uses less digits than its factorization.

20100036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20100036 is about 4483.3063691878. The cubic root of 20100036 is about 271.8935750025.

Adding to 20100036 its reverse (63000102), we get a palindrome (83100138).

The spelling of 20100036 in words is "twenty million, one hundred thousand, thirty-six".