20648341 has 4 divisors (see below), whose sum is σ = 23598112. Its totient is φ = 17698572.

The previous prime is 20648333. The next prime is 20648357. The reversal of 20648341 is 14384602.

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 an emirpimes, since its reverse is a distinct semiprime: 14384602 = 2 ⋅7192301.

It is a cyclic number.

It is not a de Polignac number, because 20648341 - 2³ = 20648333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20648321) 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, 1474875 + ... + 1474888.

It is an arithmetic number, because the mean of its divisors is an integer number (5899528).

Almost surely, 2^20648341 is an apocalyptic number.

It is an amenable number.

20648341 is a deficient number, since it is larger than the sum of its proper divisors (2949771).

20648341 is an equidigital number, since it uses as much as digits as its factorization.

20648341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949770.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20648341 is about 4544.0445640420. The cubic root of 20648341 is about 274.3437398293.

The spelling of 20648341 in words is "twenty million, six hundred forty-eight thousand, three hundred forty-one".