20035404 has 48 divisors (see below), whose sum is σ = 53743200. Its totient is φ = 6447168.

The previous prime is 20035403. The next prime is 20035409. The reversal of 20035404 is 40453002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20035403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67 + ... + 6330.

It is an arithmetic number, because the mean of its divisors is an integer number (1119650).

Almost surely, 2^20035404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20035404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26871600).

20035404 is an abundant number, since it is smaller than the sum of its proper divisors (33707796).

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

20035404 is a wasteful number, since it uses less digits than its factorization.

20035404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439 (or 6431 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20035404 is about 4476.0924923420. The cubic root of 20035404 is about 271.6018359776.

Adding to 20035404 its reverse (40453002), we get a palindrome (60488406).

The spelling of 20035404 in words is "twenty million, thirty-five thousand, four hundred four".