20041800 has 48 divisors (see below), whose sum is σ = 62131440. Its totient is φ = 5344320.

The previous prime is 20041799. The next prime is 20041807. The reversal of 20041800 is 814002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20041800.

It is not an unprimeable number, because it can be changed into a prime (20041807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16102 + ... + 17301.

It is an arithmetic number, because the mean of its divisors is an integer number (1294405).

Almost surely, 2^20041800 is an apocalyptic number.

20041800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20041800 is an abundant number, since it is smaller than the sum of its proper divisors (42089640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20041800 is a wasteful number, since it uses less digits than its factorization.

20041800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33422 (or 33413 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 20041800 is about 4476.8068977788. The cubic root of 20041800 is about 271.6307344968.

Adding to 20041800 its reverse (814002), we get a palindrome (20855802).

The spelling of 20041800 in words is "twenty million, forty-one thousand, eight hundred".