20455046 has 16 divisors (see below), whose sum is σ = 32678640. Its totient is φ = 9569280.

The previous prime is 20455013. The next prime is 20455051. The reversal of 20455046 is 64055402.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4406 + ... + 7766.

It is an arithmetic number, because the mean of its divisors is an integer number (2042415).

Almost surely, 2^20455046 is an apocalyptic number.

20455046 is a deficient number, since it is larger than the sum of its proper divisors (12223594).

20455046 is a wasteful number, since it uses less digits than its factorization.

20455046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20455046 is about 4522.7255057100. The cubic root of 20455046 is about 273.4849845872.

The spelling of 20455046 in words is "twenty million, four hundred fifty-five thousand, forty-six".