12169720 has 32 divisors (see below), whose sum is σ = 27489600. Its totient is φ = 4848768.

The previous prime is 12169699. The next prime is 12169727. The reversal of 12169720 is 2796121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12169727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14266 + ... + 15094.

It is an arithmetic number, because the mean of its divisors is an integer number (859050).

Almost surely, 2^12169720 is an apocalyptic number.

12169720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12169720 is an abundant number, since it is smaller than the sum of its proper divisors (15319880).

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

12169720 is a wasteful number, since it uses less digits than its factorization.

12169720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 12169720 is about 3488.5125770162. The cubic root of 12169720 is about 230.0171379794.

The spelling of 12169720 in words is "twelve million, one hundred sixty-nine thousand, seven hundred twenty".