20475258 has 16 divisors (see below), whose sum is σ = 41004480. Its totient is φ = 6816096.

The previous prime is 20475253. The next prime is 20475269. The reversal of 20475258 is 85257402.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 4038 + ... + 7566.

It is an arithmetic number, because the mean of its divisors is an integer number (2562780).

Almost surely, 2^20475258 is an apocalyptic number.

20475258 is an abundant number, since it is smaller than the sum of its proper divisors (20529222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20475258 is a wasteful number, since it uses less digits than its factorization.

20475258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 20475258 is about 4524.9594473321. The cubic root of 20475258 is about 273.5750334166.

The spelling of 20475258 in words is "twenty million, four hundred seventy-five thousand, two hundred fifty-eight".