20433109 has 8 divisors (see below), whose sum is σ = 21212928. Its totient is φ = 19667760.

The previous prime is 20433097. The next prime is 20433137. The reversal of 20433109 is 90133402.

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

It is a cyclic number.

It is not a de Polignac number, because 20433109 - 2⁷ = 20432981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20433109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433409) 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, 697 + ... + 6430.

It is an arithmetic number, because the mean of its divisors is an integer number (2651616).

Almost surely, 2^20433109 is an apocalyptic number.

It is an amenable number.

20433109 is a deficient number, since it is larger than the sum of its proper divisors (779819).

20433109 is an equidigital number, since it uses as much as digits as its factorization.

20433109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7235.

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

The square root of 20433109 is about 4520.2996582085. The cubic root of 20433109 is about 273.3871833554.

The spelling of 20433109 in words is "twenty million, four hundred thirty-three thousand, one hundred nine".