20748041 has 8 divisors (see below), whose sum is σ = 22172040. Its totient is φ = 19346688.

The previous prime is 20748037. The next prime is 20748071. The reversal of 20748041 is 14084702.

It can be written as a sum of positive squares in 4 ways, for example, as 4748041 + 16000000 = 2179^2 + 4000^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20748041 - 2² = 20748037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20748041.

It is not an unprimeable number, because it can be changed into a prime (20748071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3746 + ... + 7451.

It is an arithmetic number, because the mean of its divisors is an integer number (2771505).

Almost surely, 2^20748041 is an apocalyptic number.

It is an amenable number.

20748041 is a deficient number, since it is larger than the sum of its proper divisors (1423999).

20748041 is a wasteful number, since it uses less digits than its factorization.

20748041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11323.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 20748041 is about 4555.0017563114. The cubic root of 20748041 is about 274.7845850227.

The spelling of 20748041 in words is "twenty million, seven hundred forty-eight thousand, forty-one".