20270475 has 36 divisors (see below), whose sum is σ = 37894896. Its totient is φ = 10338240.

The previous prime is 20270431. The next prime is 20270479. The reversal of 20270475 is 57407202.

It is not a de Polignac number, because 20270475 - 2¹¹ = 20268427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20270479) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 3217 + ... + 7133.

It is an arithmetic number, because the mean of its divisors is an integer number (1052636).

Almost surely, 2^20270475 is an apocalyptic number.

20270475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20270475 is a deficient number, since it is larger than the sum of its proper divisors (17624421).

20270475 is a wasteful number, since it uses less digits than its factorization.

20270475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956 (or 3948 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 20270475 is about 4502.2744252211. The cubic root of 20270475 is about 272.6599235212.

Adding to 20270475 its reverse (57407202), we get a palindrome (77677677).

The spelling of 20270475 in words is "twenty million, two hundred seventy thousand, four hundred seventy-five".