20679041 has 4 divisors (see below), whose sum is σ = 21237972. Its totient is φ = 20120112.

The previous prime is 20679037. The next prime is 20679053. The reversal of 20679041 is 14097602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14097602 = 2 ⋅7048801.

It can be written as a sum of positive squares in 2 ways, for example, as 8288641 + 12390400 = 2879^2 + 3520^2 .

It is a cyclic number.

It is not a de Polignac number, because 20679041 - 2² = 20679037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20678995 and 20679013.

It is not an unprimeable number, because it can be changed into a prime (20679031) by changing a digit.

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, 279410 + ... + 279483.

It is an arithmetic number, because the mean of its divisors is an integer number (5309493).

Almost surely, 2^20679041 is an apocalyptic number.

It is an amenable number.

20679041 is a deficient number, since it is larger than the sum of its proper divisors (558931).

20679041 is an equidigital number, since it uses as much as digits as its factorization.

20679041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558930.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20679041 is about 4547.4213572089. The cubic root of 20679041 is about 274.4796374644.

The spelling of 20679041 in words is "twenty million, six hundred seventy-nine thousand, forty-one".