20361304 has 8 divisors (see below), whose sum is σ = 38177460. Its totient is φ = 10180648.

The previous prime is 20361301. The next prime is 20361323. The reversal of 20361304 is 40316302.

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

It is a super-3 number, since 3×20361304³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272574 + ... + 1272589.

Almost surely, 2^20361304 is an apocalyptic number.

It is an amenable number.

20361304 is a deficient number, since it is larger than the sum of its proper divisors (17816156).

20361304 is a wasteful number, since it uses less digits than its factorization.

20361304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545169 (or 2545165 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20361304 is about 4512.3501637174. The cubic root of 20361304 is about 273.0665663507.

Adding to 20361304 its reverse (40316302), we get a palindrome (60677606).

The spelling of 20361304 in words is "twenty million, three hundred sixty-one thousand, three hundred four".