20574473 has 6 divisors (see below), whose sum is σ = 21714714. Its totient is φ = 19491264.

The previous prime is 20574461. The next prime is 20574493. The reversal of 20574473 is 37447502.

It can be written as a sum of positive squares in only one way, i.e., 19598329 + 976144 = 4427^2 + 988^2 .

It is not a de Polignac number, because 20574473 - 2⁴ = 20574457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20574493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28136 + ... + 28857.

It is an arithmetic number, because the mean of its divisors is an integer number (3619119).

Almost surely, 2^20574473 is an apocalyptic number.

It is an amenable number.

20574473 is a deficient number, since it is larger than the sum of its proper divisors (1140241).

20574473 is an equidigital number, since it uses as much as digits as its factorization.

20574473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57031 (or 57012 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 20574473 is about 4535.9092803979. The cubic root of 20574473 is about 274.0162004025.

It can be divided in two parts, 2057447 and 3, that multiplied together give a triangular number (6172341 = T₃₅₁₃).

The spelling of 20574473 in words is "twenty million, five hundred seventy-four thousand, four hundred seventy-three".