20874241 has 2 divisors, whose sum is σ = 20874242. Its totient is φ = 20874240.

The previous prime is 20874233. The next prime is 20874247. The reversal of 20874241 is 14247802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 4906225 = 3996^2 + 2215^2 .

It is a cyclic number.

It is not a de Polignac number, because 20874241 - 2³ = 20874233 is a prime.

It is not a weakly prime, because it can be changed into another prime (20874247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10437120 + 10437121.

It is an arithmetic number, because the mean of its divisors is an integer number (10437121).

Almost surely, 2^20874241 is an apocalyptic number.

It is an amenable number.

20874241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20874241 is an equidigital number, since it uses as much as digits as its factorization.

20874241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 20874241 is about 4568.8336586048. The cubic root of 20874241 is about 275.3405851765.

It can be divided in two parts, 20874 and 241, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20874241 in words is "twenty million, eight hundred seventy-four thousand, two hundred forty-one".