1288158 has 32 divisors (see below), whose sum is σ = 2781216. Its totient is φ = 396288.

The previous prime is 1288117. The next prime is 1288163. The reversal of 1288158 is 8518821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7360 + ... + 7532.

It is an arithmetic number, because the mean of its divisors is an integer number (86913).

2^1288158 is an apocalyptic number.

1288158 is an abundant number, since it is smaller than the sum of its proper divisors (1493058).

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

1288158 is a wasteful number, since it uses less digits than its factorization.

1288158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268.

The product of its digits is 5120, while the sum is 33.

The square root of 1288158 is about 1134.9704841977. The cubic root of 1288158 is about 108.8068852873.

The spelling of 1288158 in words is "one million, two hundred eighty-eight thousand, one hundred fifty-eight".