20520341 has 8 divisors (see below), whose sum is σ = 21026304. Its totient is φ = 20017360.

The previous prime is 20520337. The next prime is 20520389. The reversal of 20520341 is 14302502.

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 20520341 - 2² = 20520337 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 (20520041) 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 7 ways as a sum of consecutive naturals, for example, 19751 + ... + 20763.

It is an arithmetic number, because the mean of its divisors is an integer number (2628288).

Almost surely, 2^20520341 is an apocalyptic number.

It is an amenable number.

20520341 is a deficient number, since it is larger than the sum of its proper divisors (505963).

20520341 is a wasteful number, since it uses less digits than its factorization.

20520341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20520341 is about 4529.9382998006. The cubic root of 20520341 is about 273.7756746351.

Adding to 20520341 its reverse (14302502), we get a palindrome (34822843).

The spelling of 20520341 in words is "twenty million, five hundred twenty thousand, three hundred forty-one".