20473407 has 18 divisors (see below), whose sum is σ = 30002336. Its totient is φ = 13453200.

The previous prime is 20473399. The next prime is 20473421. The reversal of 20473407 is 70437402.

It is not a de Polignac number, because 20473407 - 2³ = 20473399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20473007) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 91698 + ... + 91920.

Almost surely, 2^20473407 is an apocalyptic number.

20473407 is a deficient number, since it is larger than the sum of its proper divisors (9528929).

20473407 is a wasteful number, since it uses less digits than its factorization.

20473407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20473407 is about 4524.7549104896. The cubic root of 20473407 is about 273.5667892771.

The spelling of 20473407 in words is "twenty million, four hundred seventy-three thousand, four hundred seven".