20342235 has 16 divisors (see below), whose sum is σ = 33963264. Its totient is φ = 10377312.

The previous prime is 20342213. The next prime is 20342243. The reversal of 20342235 is 53224302.

It is a de Polignac number, because none of the positive numbers 2^k-20342235 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29137 + ... + 29826.

It is an arithmetic number, because the mean of its divisors is an integer number (2122704).

Almost surely, 2^20342235 is an apocalyptic number.

20342235 is a deficient number, since it is larger than the sum of its proper divisors (13621029).

20342235 is a wasteful number, since it uses less digits than its factorization.

20342235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58994.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20342235 is about 4510.2366900197. The cubic root of 20342235 is about 272.9812945898.

Adding to 20342235 its reverse (53224302), we get a palindrome (73566537).

The spelling of 20342235 in words is "twenty million, three hundred forty-two thousand, two hundred thirty-five".