12867580 has 48 divisors (see below), whose sum is σ = 30772224. Its totient is φ = 4473920.

The previous prime is 12867577. The next prime is 12867581. The reversal of 12867580 is 8576821.

12867580 = T₃₆₁ + T₃₆₂ + ... + T₄₉₈.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12867581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3789 + ... + 6331.

It is an arithmetic number, because the mean of its divisors is an integer number (641088).

Almost surely, 2^12867580 is an apocalyptic number.

12867580 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 12867580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15386112).

12867580 is an abundant number, since it is smaller than the sum of its proper divisors (17904644).

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

12867580 is a wasteful number, since it uses less digits than its factorization.

12867580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586 (or 2584 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12867580 is about 3587.1409227963. The cubic root of 12867580 is about 234.3323739962.

The spelling of 12867580 in words is "twelve million, eight hundred sixty-seven thousand, five hundred eighty".