1180287 has 6 divisors (see below), whose sum is σ = 1704872. Its totient is φ = 786852.

The previous prime is 1180279. The next prime is 1180303. The reversal of 1180287 is 7820811.

It is not a de Polignac number, because 1180287 - 2³ = 1180279 is a prime.

It is an Ulam number.

It is a Duffinian number.

1180287 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1180287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65563 + ... + 65580.

2^1180287 is an apocalyptic number.

1180287 is a deficient number, since it is larger than the sum of its proper divisors (524585).

1180287 is a wasteful number, since it uses less digits than its factorization.

1180287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131149 (or 131146 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1180287 is about 1086.4101435462. The cubic root of 1180287 is about 105.6807470392.

The spelling of 1180287 in words is "one million, one hundred eighty thousand, two hundred eighty-seven".