20343875 has 8 divisors (see below), whose sum is σ = 25389312. Its totient is φ = 16275000.

The previous prime is 20343871. The next prime is 20343893. The reversal of 20343875 is 57834302.

It is a happy number.

It is not a de Polignac number, because 20343875 - 2² = 20343871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20343871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81251 + ... + 81500.

It is an arithmetic number, because the mean of its divisors is an integer number (3173664).

Almost surely, 2^20343875 is an apocalyptic number.

20343875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20343875 is a deficient number, since it is larger than the sum of its proper divisors (5045437).

20343875 is an equidigital number, since it uses as much as digits as its factorization.

20343875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162766 (or 162756 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 20343875 is about 4510.4184949958. The cubic root of 20343875 is about 272.9886303503.

The spelling of 20343875 in words is "twenty million, three hundred forty-three thousand, eight hundred seventy-five".