20473406 has 16 divisors (see below), whose sum is σ = 32600880. Its totient is φ = 9609600.

The previous prime is 20473399. The next prime is 20473421. The reversal of 20473406 is 60437402.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23405 + ... + 24263.

It is an arithmetic number, because the mean of its divisors is an integer number (2037555).

Almost surely, 2^20473406 is an apocalyptic number.

20473406 is a deficient number, since it is larger than the sum of its proper divisors (12127474).

20473406 is a wasteful number, since it uses less digits than its factorization.

20473406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 20473406 is about 4524.7547999864. The cubic root of 20473406 is about 273.5667848231.

The spelling of 20473406 in words is "twenty million, four hundred seventy-three thousand, four hundred six".