20670104 has 32 divisors (see below), whose sum is σ = 47701920. Its totient is φ = 8176896.

The previous prime is 20670061. The next prime is 20670137. The reversal of 20670104 is 40107602.

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 7 ways as a sum of consecutive naturals, for example, 13469 + ... + 14924.

It is an arithmetic number, because the mean of its divisors is an integer number (1490685).

Almost surely, 2^20670104 is an apocalyptic number.

It is an amenable number.

20670104 is an abundant number, since it is smaller than the sum of its proper divisors (27031816).

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

20670104 is a wasteful number, since it uses less digits than its factorization.

20670104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28419 (or 28415 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20670104 is about 4546.4386062060. The cubic root of 20670104 is about 274.4400905308.

Adding to 20670104 its reverse (40107602), we get a palindrome (60777706).

The spelling of 20670104 in words is "twenty million, six hundred seventy thousand, one hundred four".