20761044 has 12 divisors (see below), whose sum is σ = 48442464. Its totient is φ = 6920344.

The previous prime is 20761043. The next prime is 20761057. The reversal of 20761044 is 44016702.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20761043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865032 + ... + 865055.

It is an arithmetic number, because the mean of its divisors is an integer number (4036872).

Almost surely, 2^20761044 is an apocalyptic number.

It is an amenable number.

20761044 is an abundant number, since it is smaller than the sum of its proper divisors (27681420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20761044 is a wasteful number, since it uses less digits than its factorization.

20761044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730094 (or 1730092 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20761044 is about 4556.4288648019. The cubic root of 20761044 is about 274.8419764298.

Adding to 20761044 its reverse (44016702), we get a palindrome (64777746).

The spelling of 20761044 in words is "twenty million, seven hundred sixty-one thousand, forty-four".