12451680 has 72 divisors (see below), whose sum is σ = 42496272. Its totient is φ = 3320064.

The previous prime is 12451679. The next prime is 12451693. The reversal of 12451680 is 8615421.

It is a tau number, because it is divible by the number of its divisors (72).

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, 2884 + ... + 5763.

It is an arithmetic number, because the mean of its divisors is an integer number (590226).

Almost surely, 2^12451680 is an apocalyptic number.

12451680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12451680 is an abundant number, since it is smaller than the sum of its proper divisors (30044592).

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

12451680 is a wasteful number, since it uses less digits than its factorization.

12451680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8668 (or 8657 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12451680 is about 3528.6938093295. The cubic root of 12451680 is about 231.7800134287.

It can be divided in two parts, 12451 and 680, that added together give a palindrome (13131).

The spelling of 12451680 in words is "twelve million, four hundred fifty-one thousand, six hundred eighty".