20874473 has 2 divisors, whose sum is σ = 20874474. Its totient is φ = 20874472.

The previous prime is 20874463. The next prime is 20874493. The reversal of 20874473 is 37447802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13017664 + 7856809 = 3608^2 + 2803^2 .

It is a cyclic number.

It is not a de Polignac number, because 20874473 - 2²⁴ = 4097257 is a prime.

It is not a weakly prime, because it can be changed into another prime (20874463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10437236 + 10437237.

It is an arithmetic number, because the mean of its divisors is an integer number (10437237).

Almost surely, 2^20874473 is an apocalyptic number.

It is an amenable number.

20874473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20874473 is an equidigital number, since it uses as much as digits as its factorization.

20874473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 20874473 is about 4568.8590479462. The cubic root of 20874473 is about 275.3416052340.

The spelling of 20874473 in words is "twenty million, eight hundred seventy-four thousand, four hundred seventy-three".