20236090 has 32 divisors (see below), whose sum is σ = 43441920. Its totient is φ = 6635904.

The previous prime is 20236081. The next prime is 20236091. The reversal of 20236090 is 9063202.

It is not an unprimeable number, because it can be changed into a prime (20236091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4675 + ... + 7894.

It is an arithmetic number, because the mean of its divisors is an integer number (1357560).

Almost surely, 2^20236090 is an apocalyptic number.

20236090 is an abundant number, since it is smaller than the sum of its proper divisors (23205830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20236090 is a wasteful number, since it uses less digits than its factorization.

20236090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12606.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20236090 is about 4498.4541789375. The cubic root of 20236090 is about 272.5056643886.

Adding to 20236090 its reverse (9063202), we get a palindrome (29299292).

The spelling of 20236090 in words is "twenty million, two hundred thirty-six thousand, ninety".