20168375 has 16 divisors (see below), whose sum is σ = 26653536. Its totient is φ = 15184000.

The previous prime is 20168371. The next prime is 20168381. The reversal of 20168375 is 57386102.

It is a happy number.

It is not a de Polignac number, because 20168375 - 2² = 20168371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168371) 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 15 ways as a sum of consecutive naturals, for example, 2621 + ... + 6870.

It is an arithmetic number, because the mean of its divisors is an integer number (1665846).

Almost surely, 2^20168375 is an apocalyptic number.

20168375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20168375 is a deficient number, since it is larger than the sum of its proper divisors (6485161).

20168375 is an equidigital number, since it uses as much as digits as its factorization.

20168375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9523 (or 9513 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 20168375 is about 4490.9213976644. The cubic root of 20168375 is about 272.2013674307.

The spelling of 20168375 in words is "twenty million, one hundred sixty-eight thousand, three hundred seventy-five".