20235830 has 16 divisors (see below), whose sum is σ = 36484560. Its totient is φ = 8080992.

The previous prime is 20235829. The next prime is 20235833. The reversal of 20235830 is 3853202.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20235796 and 20235805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20235833) 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, 6701 + ... + 9239.

It is an arithmetic number, because the mean of its divisors is an integer number (2280285).

Almost surely, 2^20235830 is an apocalyptic number.

20235830 is a deficient number, since it is larger than the sum of its proper divisors (16248730).

20235830 is a wasteful number, since it uses less digits than its factorization.

20235830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20235830 is about 4498.4252800286. The cubic root of 20235830 is about 272.5044973025.

The spelling of 20235830 in words is "twenty million, two hundred thirty-five thousand, eight hundred thirty".