1255904 has 24 divisors (see below), whose sum is σ = 2663640. Its totient is φ = 579456.

The previous prime is 1255861. The next prime is 1255907. The reversal of 1255904 is 4095521.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094 + ... + 1925.

It is an arithmetic number, because the mean of its divisors is an integer number (110985).

2^1255904 is an apocalyptic number.

It is an amenable number.

1255904 is an abundant number, since it is smaller than the sum of its proper divisors (1407736).

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

1255904 is a wasteful number, since it uses less digits than its factorization.

1255904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042 (or 3034 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1255904 is about 1120.6712274347. The cubic root of 1255904 is about 107.8910652852.

The spelling of 1255904 in words is "one million, two hundred fifty-five thousand, nine hundred four".