20475273 has 32 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 10714176.

The previous prime is 20475269. The next prime is 20475281. The reversal of 20475273 is 37257402.

It is not a de Polignac number, because 20475273 - 2² = 20475269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20475273.

It is not an unprimeable number, because it can be changed into a prime (20475253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48658 + ... + 49076.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^20475273 is an apocalyptic number.

It is an amenable number.

20475273 is a deficient number, since it is larger than the sum of its proper divisors (13393527).

20475273 is a wasteful number, since it uses less digits than its factorization.

20475273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 20475273 is about 4524.9611048052. The cubic root of 20475273 is about 273.5751002228.

The spelling of 20475273 in words is "twenty million, four hundred seventy-five thousand, two hundred seventy-three".