20112275 has 24 divisors (see below), whose sum is σ = 27141120. Its totient is φ = 14722560.

The previous prime is 20112269. The next prime is 20112277. The reversal of 20112275 is 57221102.

It is not a de Polignac number, because 20112275 - 2¹⁴ = 20095891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20112277) 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 23 ways as a sum of consecutive naturals, for example, 15086 + ... + 16364.

It is an arithmetic number, because the mean of its divisors is an integer number (1130880).

Almost surely, 2^20112275 is an apocalyptic number.

20112275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20112275 is a deficient number, since it is larger than the sum of its proper divisors (7028845).

20112275 is a wasteful number, since it uses less digits than its factorization.

20112275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 20112275 is about 4484.6711139168. The cubic root of 20112275 is about 271.9487495351.

Adding to 20112275 its reverse (57221102), we get a palindrome (77333377).

The spelling of 20112275 in words is "twenty million, one hundred twelve thousand, two hundred seventy-five".