12155760 has 60 divisors (see below), whose sum is σ = 40825512. Its totient is φ = 3241344.

The previous prime is 12155747. The next prime is 12155761. The reversal of 12155760 is 6755121.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7722 + ... + 9161.

Almost surely, 2^12155760 is an apocalyptic number.

12155760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12155760 is an abundant number, since it is smaller than the sum of its proper divisors (28669752).

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

12155760 is a wasteful number, since it uses less digits than its factorization.

12155760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16902 (or 16893 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 12155760 is about 3486.5111501328. The cubic root of 12155760 is about 229.9291527222.

The spelling of 12155760 in words is "twelve million, one hundred fifty-five thousand, seven hundred sixty".