20941072 has 20 divisors (see below), whose sum is σ = 41131420. Its totient is φ = 10326528.

The previous prime is 20941069. The next prime is 20941087. The reversal of 20941072 is 27014902.

It can be written as a sum of positive squares in 2 ways, for example, as 11723776 + 9217296 = 3424^2 + 3036^2 .

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 3 ways as a sum of consecutive naturals, for example, 7797 + ... + 10132.

It is an arithmetic number, because the mean of its divisors is an integer number (2056571).

Almost surely, 2^20941072 is an apocalyptic number.

It is an amenable number.

20941072 is a deficient number, since it is larger than the sum of its proper divisors (20190348).

20941072 is a wasteful number, since it uses less digits than its factorization.

20941072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18010 (or 18004 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20941072 is about 4576.1416062006. The cubic root of 20941072 is about 275.6341157476.

Adding to 20941072 its reverse (27014902), we get a palindrome (47955974).

The spelling of 20941072 in words is "twenty million, nine hundred forty-one thousand, seventy-two".