20406301 has 4 divisors (see below), whose sum is σ = 20462272. Its totient is φ = 20350332.

The previous prime is 20406293. The next prime is 20406311. The reversal of 20406301 is 10360402.

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.

It is a cyclic number.

It is not a de Polignac number, because 20406301 - 2³ = 20406293 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 (20406311) 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, 27435 + ... + 28168.

It is an arithmetic number, because the mean of its divisors is an integer number (5115568).

Almost surely, 2^20406301 is an apocalyptic number.

It is an amenable number.

20406301 is a deficient number, since it is larger than the sum of its proper divisors (55971).

20406301 is an equidigital number, since it uses as much as digits as its factorization.

20406301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55970.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20406301 is about 4517.3333948249. Note that the first 4 decimals coincide. The cubic root of 20406301 is about 273.2675707678.

Adding to 20406301 its reverse (10360402), we get a palindrome (30766703).

The spelling of 20406301 in words is "twenty million, four hundred six thousand, three hundred one".