12270920 has 32 divisors (see below), whose sum is σ = 27820800. Its totient is φ = 4870848.

The previous prime is 12270919. The next prime is 12270959. The reversal of 12270920 is 2907221.

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, 4457 + ... + 6663.

It is an arithmetic number, because the mean of its divisors is an integer number (869400).

Almost surely, 2^12270920 is an apocalyptic number.

12270920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12270920 is an abundant number, since it is smaller than the sum of its proper divisors (15549880).

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

12270920 is a wasteful number, since it uses less digits than its factorization.

12270920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2353 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 12270920 is about 3502.9872965799. The cubic root of 12270920 is about 230.6529649087.

The spelling of 12270920 in words is "twelve million, two hundred seventy thousand, nine hundred twenty".