19800875 has 8 divisors (see below), whose sum is σ = 24711648. Its totient is φ = 15840600.

The previous prime is 19800871. The next prime is 19800899. The reversal of 19800875 is 57800891.

It is not a de Polignac number, because 19800875 - 2² = 19800871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19800871) 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, 79079 + ... + 79328.

It is an arithmetic number, because the mean of its divisors is an integer number (3088956).

Almost surely, 2^19800875 is an apocalyptic number.

19800875 is a deficient number, since it is larger than the sum of its proper divisors (4910773).

19800875 is an equidigital number, since it uses as much as digits as its factorization.

19800875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158422 (or 158412 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 19800875 is about 4449.8174119845. The cubic root of 19800875 is about 270.5379079786.

The spelling of 19800875 in words is "nineteen million, eight hundred thousand, eight hundred seventy-five".