20342255 has 8 divisors (see below), whose sum is σ = 25695600. Its totient is φ = 15417216.

The previous prime is 20342249. The next prime is 20342269. The reversal of 20342255 is 55224302.

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

It is a cyclic number.

It is not a de Polignac number, because 20342255 - 2⁸ = 20341999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20342255.

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, 106970 + ... + 107159.

It is an arithmetic number, because the mean of its divisors is an integer number (3211950).

Almost surely, 2^20342255 is an apocalyptic number.

20342255 is a deficient number, since it is larger than the sum of its proper divisors (5353345).

20342255 is a wasteful number, since it uses less digits than its factorization.

20342255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214153.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20342255 is about 4510.2389071977. The cubic root of 20342255 is about 272.9813840526.

Adding to 20342255 its reverse (55224302), we get a palindrome (75566557).

The spelling of 20342255 in words is "twenty million, three hundred forty-two thousand, two hundred fifty-five".