1245648 has 20 divisors (see below), whose sum is σ = 3218048. Its totient is φ = 415200.

The previous prime is 1245623. The next prime is 1245649. The reversal of 1245648 is 8465421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245649) 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, 12928 + ... + 13023.

2^1245648 is an apocalyptic number.

It is an amenable number.

1245648 is an abundant number, since it is smaller than the sum of its proper divisors (1972400).

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

1245648 is a wasteful number, since it uses less digits than its factorization.

1245648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25962 (or 25956 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 1245648 is about 1116.0860181904. The cubic root of 1245648 is about 107.5965744730.

The spelling of 1245648 in words is "one million, two hundred forty-five thousand, six hundred forty-eight".