20239255 has 8 divisors (see below), whose sum is σ = 24358032. Its totient is φ = 16144128.

The previous prime is 20239253. The next prime is 20239267. The reversal of 20239255 is 55293202.

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 20239255 - 2¹ = 20239253 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 (20239253) 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, 3969 + ... + 7498.

It is an arithmetic number, because the mean of its divisors is an integer number (3044754).

Almost surely, 2^20239255 is an apocalyptic number.

20239255 is a deficient number, since it is larger than the sum of its proper divisors (4118777).

20239255 is a wasteful number, since it uses less digits than its factorization.

20239255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11825.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 20239255 is about 4498.8059526946. The cubic root of 20239255 is about 272.5198706156.

The spelling of 20239255 in words is "twenty million, two hundred thirty-nine thousand, two hundred fifty-five".