12039220 has 12 divisors (see below), whose sum is σ = 25282404. Its totient is φ = 4815680.

The previous prime is 12039193. The next prime is 12039221. The reversal of 12039220 is 2293021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5779216 + 6260004 = 2404^2 + 2502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12039221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 300961 + ... + 301000.

It is an arithmetic number, because the mean of its divisors is an integer number (2106867).

Almost surely, 2^12039220 is an apocalyptic number.

12039220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12039220 is an abundant number, since it is smaller than the sum of its proper divisors (13243184).

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

12039220 is a wasteful number, since it uses less digits than its factorization.

12039220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601970 (or 601968 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 12039220 is about 3469.7579166276. The cubic root of 12039220 is about 229.1919977876.

It can be divided in two parts, 120 and 39220, that added together give a triangular number (39340 = T₂₈₀).

The spelling of 12039220 in words is "twelve million, thirty-nine thousand, two hundred twenty".