20135413 has 8 divisors (see below), whose sum is σ = 20381400. Its totient is φ = 19891200.

The previous prime is 20135377. The next prime is 20135431. The reversal of 20135413 is 31453102.

It can be written as a sum of positive squares in 4 ways, for example, as 3020644 + 17114769 = 1738^2 + 4137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20135413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50013 + ... + 50413.

It is an arithmetic number, because the mean of its divisors is an integer number (2547675).

Almost surely, 2^20135413 is an apocalyptic number.

It is an amenable number.

20135413 is a deficient number, since it is larger than the sum of its proper divisors (245987).

20135413 is a wasteful number, since it uses less digits than its factorization.

20135413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20135413 is about 4487.2500487492. The cubic root of 20135413 is about 272.0529966299.

Adding to 20135413 its reverse (31453102), we get a palindrome (51588515).

The spelling of 20135413 in words is "twenty million, one hundred thirty-five thousand, four hundred thirteen".