20423230 has 8 divisors (see below), whose sum is σ = 36761832. Its totient is φ = 8169288.

The previous prime is 20423213. The next prime is 20423231. The reversal of 20423230 is 3232402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021152 + ... + 1021171.

It is an arithmetic number, because the mean of its divisors is an integer number (4595229).

Almost surely, 2^20423230 is an apocalyptic number.

20423230 is a deficient number, since it is larger than the sum of its proper divisors (16338602).

20423230 is a wasteful number, since it uses less digits than its factorization.

20423230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042330.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20423230 is about 4519.2067888071. The cubic root of 20423230 is about 273.3431171724.

Adding to 20423230 its reverse (3232402), we get a palindrome (23655632).

The spelling of 20423230 in words is "twenty million, four hundred twenty-three thousand, two hundred thirty".