20384801 has 4 divisors (see below), whose sum is σ = 20394900. Its totient is φ = 20374704.

The previous prime is 20384789. The next prime is 20384809. The reversal of 20384801 is 10848302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10923025 + 9461776 = 3305^2 + 3076^2 .

It is a cyclic number.

It is not a de Polignac number, because 20384801 - 2⁶ = 20384737 is a prime.

It is a super-2 number, since 2×20384801² = 831080223619202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20384809) 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, 866 + ... + 6443.

It is an arithmetic number, because the mean of its divisors is an integer number (5098725).

Almost surely, 2^20384801 is an apocalyptic number.

It is an amenable number.

20384801 is a deficient number, since it is larger than the sum of its proper divisors (10099).

20384801 is an equidigital number, since it uses as much as digits as its factorization.

20384801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10098.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 20384801 is about 4514.9530451600. The cubic root of 20384801 is about 273.1715658237.

The spelling of 20384801 in words is "twenty million, three hundred eighty-four thousand, eight hundred one".