20434004 has 12 divisors (see below), whose sum is σ = 36094464. Its totient is φ = 10121304.

The previous prime is 20433989. The next prime is 20434069. The reversal of 20434004 is 40043402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23444 + ... + 24299.

It is an arithmetic number, because the mean of its divisors is an integer number (3007872).

Almost surely, 2^20434004 is an apocalyptic number.

It is an amenable number.

20434004 is a deficient number, since it is larger than the sum of its proper divisors (15660460).

20434004 is a wasteful number, since it uses less digits than its factorization.

20434004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47854 (or 47852 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20434004 is about 4520.3986549861. The cubic root of 20434004 is about 273.3911748830.

Adding to 20434004 its reverse (40043402), we get a palindrome (60477406).

The spelling of 20434004 in words is "twenty million, four hundred thirty-four thousand, four".