20546930 has 16 divisors (see below), whose sum is σ = 37036440. Its totient is φ = 8207232.

The previous prime is 20546921. The next prime is 20546941. The reversal of 20546930 is 3964502.

It can be written as a sum of positive squares in 4 ways, for example, as 20457529 + 89401 = 4523^2 + 299^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20546893 and 20546902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11966 + ... + 13574.

Almost surely, 2^20546930 is an apocalyptic number.

20546930 is a deficient number, since it is larger than the sum of its proper divisors (16489510).

20546930 is a wasteful number, since it uses less digits than its factorization.

20546930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 20546930 is about 4532.8721579149. The cubic root of 20546930 is about 273.8938708450.

The spelling of 20546930 in words is "twenty million, five hundred forty-six thousand, nine hundred thirty".