20700044 has 12 divisors (see below), whose sum is σ = 38131800. Its totient is φ = 9805248.

The previous prime is 20700041. The next prime is 20700049. The reversal of 20700044 is 44000702.

It is a junction number, because it is equal to n+sod(n) for n = 20699995 and 20700031.

It is not an unprimeable number, because it can be changed into a prime (20700041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136109 + ... + 136260.

It is an arithmetic number, because the mean of its divisors is an integer number (3177650).

Almost surely, 2^20700044 is an apocalyptic number.

It is an amenable number.

20700044 is a deficient number, since it is larger than the sum of its proper divisors (17431756).

20700044 is a wasteful number, since it uses less digits than its factorization.

20700044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272392 (or 272390 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 20700044 is about 4549.7301018852. The cubic root of 20700044 is about 274.5725325716.

Adding to 20700044 its reverse (44000702), we get a palindrome (64700746).

The spelling of 20700044 in words is "twenty million, seven hundred thousand, forty-four".