20846741 has 4 divisors (see below), whose sum is σ = 20933484. Its totient is φ = 20760000.

The previous prime is 20846731. The next prime is 20846753. The reversal of 20846741 is 14764802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17255716 + 3591025 = 4154^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 20846741 - 2⁶ = 20846677 is a prime.

It is a super-2 number, since 2×20846741² = 869173220642162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20846698 and 20846707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20846731) 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, 43010 + ... + 43491.

It is an arithmetic number, because the mean of its divisors is an integer number (5233371).

Almost surely, 2^20846741 is an apocalyptic number.

It is an amenable number.

20846741 is a deficient number, since it is larger than the sum of its proper divisors (86743).

20846741 is an equidigital number, since it uses as much as digits as its factorization.

20846741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86742.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 20846741 is about 4565.8231459398. The cubic root of 20846741 is about 275.2196196027.

The spelling of 20846741 in words is "twenty million, eight hundred forty-six thousand, seven hundred forty-one".