12655380 has 24 divisors (see below), whose sum is σ = 35435232. Its totient is φ = 3374752.

The previous prime is 12655367. The next prime is 12655381. The reversal of 12655380 is 8355621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12655381) 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, 105402 + ... + 105521.

It is an arithmetic number, because the mean of its divisors is an integer number (1476468).

Almost surely, 2^12655380 is an apocalyptic number.

12655380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12655380 is an abundant number, since it is smaller than the sum of its proper divisors (22779852).

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

12655380 is a wasteful number, since it uses less digits than its factorization.

12655380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210935 (or 210933 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 12655380 is about 3557.4400908518. The cubic root of 12655380 is about 233.0370979876.

The spelling of 12655380 in words is "twelve million, six hundred fifty-five thousand, three hundred eighty".