20235399 has 8 divisors (see below), whose sum is σ = 28400640. Its totient is φ = 12780216.

The previous prime is 20235373. The next prime is 20235403. The reversal of 20235399 is 99353202.

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

It is not a de Polignac number, because 20235399 - 2⁸ = 20235143 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20235329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177447 + ... + 177560.

It is an arithmetic number, because the mean of its divisors is an integer number (3550080).

Almost surely, 2^20235399 is an apocalyptic number.

20235399 is a deficient number, since it is larger than the sum of its proper divisors (8165241).

20235399 is a wasteful number, since it uses less digits than its factorization.

20235399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355029.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 20235399 is about 4498.3773741206. The cubic root of 20235399 is about 272.5025626109.

The spelling of 20235399 in words is "twenty million, two hundred thirty-five thousand, three hundred ninety-nine".