20682473 has 4 divisors (see below), whose sum is σ = 23637120. Its totient is φ = 17727828.

The previous prime is 20682463. The next prime is 20682499. The reversal of 20682473 is 37428602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20682473 - 2¹⁰ = 20681449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20682413) 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, 1477313 + ... + 1477326.

It is an arithmetic number, because the mean of its divisors is an integer number (5909280).

Almost surely, 2^20682473 is an apocalyptic number.

It is an amenable number.

20682473 is a deficient number, since it is larger than the sum of its proper divisors (2954647).

20682473 is an equidigital number, since it uses as much as digits as its factorization.

20682473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954646.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20682473 is about 4547.7986982715. The cubic root of 20682473 is about 274.4948213086.

The spelling of 20682473 in words is "twenty million, six hundred eighty-two thousand, four hundred seventy-three".