20409214 has 32 divisors (see below), whose sum is σ = 38335680. Its totient is φ = 7945728.

The previous prime is 20409209. The next prime is 20409217. The reversal of 20409214 is 41290402.

20409214 is a modest number, since divided by 9214 gives 204 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20409217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5424 + ... + 8380.

It is an arithmetic number, because the mean of its divisors is an integer number (1197990).

Almost surely, 2^20409214 is an apocalyptic number.

20409214 is a deficient number, since it is larger than the sum of its proper divisors (17926466).

20409214 is a wasteful number, since it uses less digits than its factorization.

20409214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20409214 is about 4517.6558080491. The cubic root of 20409214 is about 273.2805731334.

Adding to 20409214 its reverse (41290402), we get a palindrome (61699616).

The spelling of 20409214 in words is "twenty million, four hundred nine thousand, two hundred fourteen".