20678273 has 16 divisors (see below), whose sum is σ = 27298944. Its totient is φ = 15164160.

The previous prime is 20678263. The next prime is 20678279. The reversal of 20678273 is 37287602.

It is not a de Polignac number, because 20678273 - 2¹² = 20674177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20678279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6590 + ... + 9207.

It is an arithmetic number, because the mean of its divisors is an integer number (1706184).

Almost surely, 2^20678273 is an apocalyptic number.

It is an amenable number.

20678273 is a deficient number, since it is larger than the sum of its proper divisors (6620671).

20678273 is a wasteful number, since it uses less digits than its factorization.

20678273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15832.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 20678273 is about 4547.3369129635. The cubic root of 20678273 is about 274.4762394511.

The spelling of 20678273 in words is "twenty million, six hundred seventy-eight thousand, two hundred seventy-three".