12270020 has 24 divisors (see below), whose sum is σ = 29448384. Its totient is φ = 4206816.

The previous prime is 12269989. The next prime is 12270047. The reversal of 12270020 is 2007221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 12269977 and 12270004.

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, 43682 + ... + 43961.

It is an arithmetic number, because the mean of its divisors is an integer number (1227016).

Almost surely, 2^12270020 is an apocalyptic number.

12270020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12270020 is an abundant number, since it is smaller than the sum of its proper divisors (17178364).

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

12270020 is a wasteful number, since it uses less digits than its factorization.

12270020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87659 (or 87657 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 12270020 is about 3502.8588324396. The cubic root of 12270020 is about 230.6473257569.

Adding to 12270020 its reverse (2007221), we get a palindrome (14277241).

The spelling of 12270020 in words is "twelve million, two hundred seventy thousand, twenty".