20432233 has 2 divisors, whose sum is σ = 20432234. Its totient is φ = 20432232.

The previous prime is 20432183. The next prime is 20432261. The reversal of 20432233 is 33223402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16621929 + 3810304 = 4077^2 + 1952^2 .

It is a cyclic number.

It is not a de Polignac number, because 20432233 - 2⁹ = 20431721 is a prime.

It is a super-2 number, since 2×20432233² = 834952290732578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20432233.

It is not a weakly prime, because it can be changed into another prime (20432273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216116 + 10216117.

It is an arithmetic number, because the mean of its divisors is an integer number (10216117).

Almost surely, 2^20432233 is an apocalyptic number.

It is an amenable number.

20432233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20432233 is an equidigital number, since it uses as much as digits as its factorization.

20432233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 20432233 is about 4520.2027609389. The cubic root of 20432233 is about 273.3832764513.

Adding to 20432233 its reverse (33223402), we get a palindrome (53655635).

The spelling of 20432233 in words is "twenty million, four hundred thirty-two thousand, two hundred thirty-three".