1287160 has 32 divisors (see below), whose sum is σ = 3310560. Its totient is φ = 441216.

The previous prime is 1287157. The next prime is 1287163. The reversal of 1287160 is 617821.

It is an interprime number because it is at equal distance from previous prime (1287157) and next prime (1287163).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287163) 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, 2019 + ... + 2578.

It is an arithmetic number, because the mean of its divisors is an integer number (103455).

2^1287160 is an apocalyptic number.

1287160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1287160 is an abundant number, since it is smaller than the sum of its proper divisors (2023400).

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

1287160 is a wasteful number, since it uses less digits than its factorization.

1287160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4615 (or 4611 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1287160 is about 1134.5307399978. The cubic root of 1287160 is about 108.7787786610.

The spelling of 1287160 in words is "one million, two hundred eighty-seven thousand, one hundred sixty".