1255788 has 18 divisors (see below), whose sum is σ = 3174444. Its totient is φ = 418584.

The previous prime is 1255759. The next prime is 1255799. The reversal of 1255788 is 8875521.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 34883 = 1255788 / (1 + 2 + 5 + 5 + 7 + 8 + 8).

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17406 + ... + 17477.

It is an arithmetic number, because the mean of its divisors is an integer number (176358).

2^1255788 is an apocalyptic number.

1255788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1255788 is an abundant number, since it is smaller than the sum of its proper divisors (1918656).

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

1255788 is a wasteful number, since it uses less digits than its factorization.

1255788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34893 (or 34888 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 1255788 is about 1120.6194715424. The cubic root of 1255788 is about 107.8877434419.

The spelling of 1255788 in words is "one million, two hundred fifty-five thousand, seven hundred eighty-eight".