20670120 has 64 divisors (see below), whose sum is σ = 68904000. Its totient is φ = 5511744.

The previous prime is 20670061. The next prime is 20670137. The reversal of 20670120 is 2107602.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20670093 and 20670102.

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 15 ways as a sum of consecutive naturals, for example, 8490 + ... + 10649.

It is an arithmetic number, because the mean of its divisors is an integer number (1076625).

Almost surely, 2^20670120 is an apocalyptic number.

20670120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20670120 is an abundant number, since it is smaller than the sum of its proper divisors (48233880).

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

20670120 is a wasteful number, since it uses less digits than its factorization.

20670120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19159 (or 19149 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20670120 is about 4546.4403658247. The cubic root of 20670120 is about 274.4401613423.

Adding to 20670120 its reverse (2107602), we get a palindrome (22777722).

The spelling of 20670120 in words is "twenty million, six hundred seventy thousand, one hundred twenty".