20200475 has 6 divisors (see below), whose sum is σ = 25048620. Its totient is φ = 16160360.

The previous prime is 20200441. The next prime is 20200511. The reversal of 20200475 is 57400202.

It is not a de Polignac number, because 20200475 - 2²² = 16006171 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403985 + ... + 404034.

It is an arithmetic number, because the mean of its divisors is an integer number (4174770).

Almost surely, 2^20200475 is an apocalyptic number.

20200475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20200475 is a deficient number, since it is larger than the sum of its proper divisors (4848145).

20200475 is an equidigital number, since it uses as much as digits as its factorization.

20200475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808029 (or 808024 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20200475 is about 4494.4938535946. The cubic root of 20200475 is about 272.3457028463.

Adding to 20200475 its reverse (57400202), we get a palindrome (77600677).

The spelling of 20200475 in words is "twenty million, two hundred thousand, four hundred seventy-five".