20576473 has 2 divisors, whose sum is σ = 20576474. Its totient is φ = 20576472.

The previous prime is 20576471. The next prime is 20576483. The reversal of 20576473 is 37467502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16216729 + 4359744 = 4027^2 + 2088^2 .

It is a cyclic number.

It is not a de Polignac number, because 20576473 - 2¹ = 20576471 is a prime.

It is a super-2 number, since 2×20576473² = 846782482239458, which contains 22 as substring.

Together with 20576471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20576471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10288236 + 10288237.

It is an arithmetic number, because the mean of its divisors is an integer number (10288237).

Almost surely, 2^20576473 is an apocalyptic number.

It is an amenable number.

20576473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20576473 is an equidigital number, since it uses as much as digits as its factorization.

20576473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 20576473 is about 4536.1297380035. The cubic root of 20576473 is about 274.0250789555.

The spelling of 20576473 in words is "twenty million, five hundred seventy-six thousand, four hundred seventy-three".