1258887 has 16 divisors (see below), whose sum is σ = 1935872. Its totient is φ = 712800.

The previous prime is 1258877. The next prime is 1258889. The reversal of 1258887 is 7888521.

It is not a de Polignac number, because 1258887 - 2⁴ = 1258871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2973 + ... + 3369.

It is an arithmetic number, because the mean of its divisors is an integer number (120992).

2^1258887 is an apocalyptic number.

1258887 is a deficient number, since it is larger than the sum of its proper divisors (676985).

1258887 is a wasteful number, since it uses less digits than its factorization.

1258887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its digits is 35840, while the sum is 39.

The square root of 1258887 is about 1122.0013368976. The cubic root of 1258887 is about 107.9764180337.

It can be divided in two parts, 1258 and 887, that added together give a triangular number (2145 = T₆₅).

The spelling of 1258887 in words is "one million, two hundred fifty-eight thousand, eight hundred eighty-seven".