20207275 has 24 divisors (see below), whose sum is σ = 27547344. Its totient is φ = 14582400.

The previous prime is 20207269. The next prime is 20207281. The reversal of 20207275 is 57270202.

It is an interprime number because it is at equal distance from previous prime (20207269) and next prime (20207281).

It is not a de Polignac number, because 20207275 - 2⁷ = 20207147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a plaindrome in base 16.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 53989 + ... + 54361.

It is an arithmetic number, because the mean of its divisors is an integer number (1147806).

Almost surely, 2^20207275 is an apocalyptic number.

20207275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20207275 is a deficient number, since it is larger than the sum of its proper divisors (7340069).

20207275 is a wasteful number, since it uses less digits than its factorization.

20207275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 20207275 is about 4495.2502711195. The cubic root of 20207275 is about 272.3762589432.

Adding to 20207275 its reverse (57270202), we get a palindrome (77477477).

The spelling of 20207275 in words is "twenty million, two hundred seven thousand, two hundred seventy-five".