20434135 has 8 divisors (see below), whose sum is σ = 24650496. Its totient is φ = 16260960.

The previous prime is 20434109. The next prime is 20434147. The reversal of 20434135 is 53143402.

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

It is not a de Polignac number, because 20434135 - 2¹⁹ = 19909847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9744 + ... + 11653.

It is an arithmetic number, because the mean of its divisors is an integer number (3081312).

Almost surely, 2^20434135 is an apocalyptic number.

20434135 is a deficient number, since it is larger than the sum of its proper divisors (4216361).

20434135 is a wasteful number, since it uses less digits than its factorization.

20434135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21593.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20434135 is about 4520.4131448353. The cubic root of 20434135 is about 273.3917591080.

Adding to 20434135 its reverse (53143402), we get a palindrome (73577537).

The spelling of 20434135 in words is "twenty million, four hundred thirty-four thousand, one hundred thirty-five".