20454206 has 8 divisors (see below), whose sum is σ = 31069920. Its totient is φ = 10097568.

The previous prime is 20454173. The next prime is 20454211. The reversal of 20454206 is 60245402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 64571 + ... + 64886.

It is an arithmetic number, because the mean of its divisors is an integer number (3883740).

Almost surely, 2^20454206 is an apocalyptic number.

20454206 is a deficient number, since it is larger than the sum of its proper divisors (10615714).

20454206 is a wasteful number, since it uses less digits than its factorization.

20454206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129538.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20454206 is about 4522.6326403987. The cubic root of 20454206 is about 273.4812409220.

Adding to 20454206 its reverse (60245402), we get a palindrome (80699608).

The spelling of 20454206 in words is "twenty million, four hundred fifty-four thousand, two hundred six".