20412406 has 16 divisors (see below), whose sum is σ = 35473824. Its totient is φ = 8627904.

The previous prime is 20412397. The next prime is 20412409. The reversal of 20412406 is 60421402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8965 + ... + 11008.

It is an arithmetic number, because the mean of its divisors is an integer number (2217114).

Almost surely, 2^20412406 is an apocalyptic number.

20412406 is a deficient number, since it is larger than the sum of its proper divisors (15061418).

20412406 is a wasteful number, since it uses less digits than its factorization.

20412406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20055.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20412406 is about 4518.0090748027. The cubic root of 20412406 is about 273.2948194132.

Adding to 20412406 its reverse (60421402), we get a palindrome (80833808).

The spelling of 20412406 in words is "twenty million, four hundred twelve thousand, four hundred six".