20465441 has 4 divisors (see below), whose sum is σ = 20475312. Its totient is φ = 20455572.

The previous prime is 20465429. The next prime is 20465447. The reversal of 20465441 is 14456402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14456402 = 2 ⋅7228201.

It is a cyclic number.

It is not a de Polignac number, because 20465441 - 2¹⁰ = 20464417 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 20465441.

It is not an unprimeable number, because it can be changed into a prime (20465447) 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, 491 + ... + 6416.

It is an arithmetic number, because the mean of its divisors is an integer number (5118828).

Almost surely, 2^20465441 is an apocalyptic number.

It is an amenable number.

20465441 is a deficient number, since it is larger than the sum of its proper divisors (9871).

20465441 is an equidigital number, since it uses as much as digits as its factorization.

20465441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9870.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20465441 is about 4523.8745561742. The cubic root of 20465441 is about 273.5313039645.

The spelling of 20465441 in words is "twenty million, four hundred sixty-five thousand, four hundred forty-one".