20434504 has 8 divisors (see below), whose sum is σ = 38314710. Its totient is φ = 10217248.

The previous prime is 20434501. The next prime is 20434507. The reversal of 20434504 is 40543402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20434501) and next prime (20434507).

It can be written as a sum of positive squares in only one way, i.e., 20232004 + 202500 = 4498^2 + 450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20434501) 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 as a sum of consecutive naturals, namely, 1277149 + ... + 1277164.

Almost surely, 2^20434504 is an apocalyptic number.

It is an amenable number.

20434504 is a deficient number, since it is larger than the sum of its proper divisors (17880206).

20434504 is a wasteful number, since it uses less digits than its factorization.

20434504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554319 (or 2554315 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20434504 is about 4520.4539595045. The cubic root of 20434504 is about 273.3934047360.

Adding to 20434504 its reverse (40543402), we get a palindrome (60977906).

The spelling of 20434504 in words is "twenty million, four hundred thirty-four thousand, five hundred four".