20122406 has 16 divisors (see below), whose sum is σ = 32179200. Its totient is φ = 9409608.

The previous prime is 20122397. The next prime is 20122429. The reversal of 20122406 is 60422102.

It is a super-2 number, since 2×20122406² = 809822446457672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 350 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (2011200).

Almost surely, 2^20122406 is an apocalyptic number.

20122406 is a deficient number, since it is larger than the sum of its proper divisors (12056794).

20122406 is a wasteful number, since it uses less digits than its factorization.

20122406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6803.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20122406 is about 4485.8004859779. The cubic root of 20122406 is about 271.9944040804.

Adding to 20122406 its reverse (60422102), we get a palindrome (80544508).

The spelling of 20122406 in words is "twenty million, one hundred twenty-two thousand, four hundred six".