20040195 has 64 divisors (see below), whose sum is σ = 39536640. Its totient is φ = 8460288.

The previous prime is 20040191. The next prime is 20040197. The reversal of 20040195 is 59104002.

It is not a de Polignac number, because 20040195 - 2² = 20040191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20040191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183801 + ... + 183909.

It is an arithmetic number, because the mean of its divisors is an integer number (617760).

Almost surely, 2^20040195 is an apocalyptic number.

20040195 is a deficient number, since it is larger than the sum of its proper divisors (19496445).

20040195 is a wasteful number, since it uses less digits than its factorization.

20040195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20040195 is about 4476.6276369607. The cubic root of 20040195 is about 271.6234833356.

Adding to 20040195 its reverse (59104002), we get a palindrome (79144197).

The spelling of 20040195 in words is "twenty million, forty thousand, one hundred ninety-five".