20135000 has 40 divisors (see below), whose sum is σ = 47188020. Its totient is φ = 8052000.

The previous prime is 20134999. The next prime is 20135009. The reversal of 20135000 is 53102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2987 + ... + 7013.

Almost surely, 2^20135000 is an apocalyptic number.

20135000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20135000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23594010).

20135000 is an abundant number, since it is smaller than the sum of its proper divisors (27053020).

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

20135000 is an equidigital number, since it uses as much as digits as its factorization.

20135000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053 (or 4034 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 20135000 is about 4487.2040292369. The cubic root of 20135000 is about 272.0511365794.

Adding to 20135000 its reverse (53102), we get a palindrome (20188102).

The spelling of 20135000 in words is "twenty million, one hundred thirty-five thousand".