12177680 has 60 divisors (see below), whose sum is σ = 29485092. Its totient is φ = 4677120.

The previous prime is 12177667. The next prime is 12177701. The reversal of 12177680 is 8677121.

It can be written as a sum of positive squares in 6 ways, for example, as 1731856 + 10445824 = 1316^2 + 3232^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67190 + ... + 67370.

Almost surely, 2^12177680 is an apocalyptic number.

12177680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12177680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14742546).

12177680 is an abundant number, since it is smaller than the sum of its proper divisors (17307412).

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

12177680 is a wasteful number, since it uses less digits than its factorization.

12177680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 12177680 is about 3489.6532779060. The cubic root of 12177680 is about 230.0672771053.

The spelling of 12177680 in words is "twelve million, one hundred seventy-seven thousand, six hundred eighty".