1252864 has 20 divisors (see below), whose sum is σ = 2504304. Its totient is φ = 626176.

The previous prime is 1252843. The next prime is 1252873. The reversal of 1252864 is 4682521.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 712 + ... + 1735.

2^1252864 is an apocalyptic number.

It is an amenable number.

1252864 is a deficient number, since it is larger than the sum of its proper divisors (1251440).

1252864 is an frugal number, since it uses more digits than its factorization.

1252864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2465 (or 2449 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 1252864 is about 1119.3140756731. The cubic root of 1252864 is about 107.8039424280.

It can be divided in two parts, 1252 and 864, that added together give a square (2116 = 46²).

The spelling of 1252864 in words is "one million, two hundred fifty-two thousand, eight hundred sixty-four".