1253864 has 8 divisors (see below), whose sum is σ = 2351010. Its totient is φ = 626928.

The previous prime is 1253851. The next prime is 1253887. The reversal of 1253864 is 4683521.

It can be written as a sum of positive squares in only one way, i.e., 1085764 + 168100 = 1042^2 + 410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78359 + ... + 78374.

2^1253864 is an apocalyptic number.

It is an amenable number.

1253864 is a deficient number, since it is larger than the sum of its proper divisors (1097146).

1253864 is a wasteful number, since it uses less digits than its factorization.

1253864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156739 (or 156735 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 1253864 is about 1119.7606887188. The cubic root of 1253864 is about 107.8326168021.

The spelling of 1253864 in words is "one million, two hundred fifty-three thousand, eight hundred sixty-four".