20412275 has 24 divisors (see below), whose sum is σ = 27487824. Its totient is φ = 14947200.

The previous prime is 20412269. The next prime is 20412277. The reversal of 20412275 is 57221402.

It is a happy number.

It is not a de Polignac number, because 20412275 - 2¹⁴ = 20395891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20412275.

It is not an unprimeable number, because it can be changed into a prime (20412277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58652 + ... + 58998.

It is an arithmetic number, because the mean of its divisors is an integer number (1145326).

Almost surely, 2^20412275 is an apocalyptic number.

20412275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20412275 is a deficient number, since it is larger than the sum of its proper divisors (7075549).

20412275 is a wasteful number, since it uses less digits than its factorization.

20412275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 20412275 is about 4517.9945772433. The cubic root of 20412275 is about 273.2942347737.

Adding to 20412275 its reverse (57221402), we get a palindrome (77633677).

The spelling of 20412275 in words is "twenty million, four hundred twelve thousand, two hundred seventy-five".