20121676 has 24 divisors (see below), whose sum is σ = 37422000. Its totient is φ = 9434112.

The previous prime is 20121667. The next prime is 20121683. The reversal of 20121676 is 67612102.

It is a self number, because there is not a number n which added to its sum of digits gives 20121676.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33636 + ... + 34228.

It is an arithmetic number, because the mean of its divisors is an integer number (1559250).

Almost surely, 2^20121676 is an apocalyptic number.

It is an amenable number.

20121676 is a deficient number, since it is larger than the sum of its proper divisors (17300324).

20121676 is a wasteful number, since it uses less digits than its factorization.

20121676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20121676 is about 4485.7191173768. The cubic root of 20121676 is about 271.9911149058.

Adding to 20121676 its reverse (67612102), we get a palindrome (87733778).

The spelling of 20121676 in words is "twenty million, one hundred twenty-one thousand, six hundred seventy-six".