20244406 has 32 divisors (see below), whose sum is σ = 38299968. Its totient is φ = 7810560.

The previous prime is 20244397. The next prime is 20244409. The reversal of 20244406 is 60444202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6106 + ... + 8818.

It is an arithmetic number, because the mean of its divisors is an integer number (1196874).

Almost surely, 2^20244406 is an apocalyptic number.

20244406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20244406 is a deficient number, since it is larger than the sum of its proper divisors (18055562).

20244406 is a wasteful number, since it uses less digits than its factorization.

20244406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 20244406 is about 4499.3784015128. The cubic root of 20244406 is about 272.5429879156.

Adding to 20244406 its reverse (60444202), we get a palindrome (80688608).

The spelling of 20244406 in words is "twenty million, two hundred forty-four thousand, four hundred six".