20406914 has 8 divisors (see below), whose sum is σ = 33393168. Its totient is φ = 9275860.

The previous prime is 20406833. The next prime is 20406917. The reversal of 20406914 is 41960402.

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

It is not an unprimeable number, because it can be changed into a prime (20406917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463772 + ... + 463815.

It is an arithmetic number, because the mean of its divisors is an integer number (4174146).

Almost surely, 2^20406914 is an apocalyptic number.

20406914 is a deficient number, since it is larger than the sum of its proper divisors (12986254).

20406914 is a wasteful number, since it uses less digits than its factorization.

20406914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927600.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20406914 is about 4517.4012440783. The cubic root of 20406914 is about 273.2703070361.

The spelling of 20406914 in words is "twenty million, four hundred six thousand, nine hundred fourteen".