1253768 has 16 divisors (see below), whose sum is σ = 2395980. Its totient is φ = 614848.

The previous prime is 1253761. The next prime is 1253783. The reversal of 1253768 is 8673521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1249924 + 3844 = 1118^2 + 62^2 .

It is not an unprimeable number, because it can be changed into a prime (1253761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055 + ... + 1902.

2^1253768 is an apocalyptic number.

It is an amenable number.

1253768 is a deficient number, since it is larger than the sum of its proper divisors (1142212).

1253768 is a wasteful number, since it uses less digits than its factorization.

1253768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016 (or 3012 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1253768 is about 1119.7178215961. The cubic root of 1253768 is about 107.8298647238.

Subtracting from 1253768 its sum of digits (32), we obtain a triangular number (1253736 = T₁₅₈₃).

The spelling of 1253768 in words is "one million, two hundred fifty-three thousand, seven hundred sixty-eight".