12571280 has 20 divisors (see below), whose sum is σ = 29228412. Its totient is φ = 5028480.

The previous prime is 12571267. The next prime is 12571301. The reversal of 12571280 is 8217521.

It can be written as a sum of positive squares in 2 ways, for example, as 8042896 + 4528384 = 2836^2 + 2128^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78491 + ... + 78650.

Almost surely, 2^12571280 is an apocalyptic number.

12571280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12571280 is an abundant number, since it is smaller than the sum of its proper divisors (16657132).

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

12571280 is a wasteful number, since it uses less digits than its factorization.

12571280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157154 (or 157148 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 12571280 is about 3545.6000902527. The cubic root of 12571280 is about 232.5197424173.

The spelling of 12571280 in words is "twelve million, five hundred seventy-one thousand, two hundred eighty".