20104437 has 8 divisors (see below), whose sum is σ = 27311904. Its totient is φ = 13149968.

The previous prime is 20104433. The next prime is 20104493. The reversal of 20104437 is 73440102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20104437 - 2² = 20104433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104433) 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 7 ways as a sum of consecutive naturals, for example, 63063 + ... + 63380.

It is an arithmetic number, because the mean of its divisors is an integer number (3413988).

Almost surely, 2^20104437 is an apocalyptic number.

It is an amenable number.

20104437 is a deficient number, since it is larger than the sum of its proper divisors (7207467).

20104437 is a wasteful number, since it uses less digits than its factorization.

20104437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126499.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20104437 is about 4483.7971631197. The cubic root of 20104437 is about 271.9134176917.

Adding to 20104437 its reverse (73440102), we get a palindrome (93544539).

The spelling of 20104437 in words is "twenty million, one hundred four thousand, four hundred thirty-seven".