1236648 has 64 divisors (see below), whose sum is σ = 3749760. Its totient is φ = 331776.

The previous prime is 1236643. The next prime is 1236659. The reversal of 1236648 is 8466321.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1236643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2640 + ... + 3072.

It is an arithmetic number, because the mean of its divisors is an integer number (58590).

2^1236648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1236648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874880).

1236648 is an abundant number, since it is smaller than the sum of its proper divisors (2513112).

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

1236648 is a wasteful number, since it uses less digits than its factorization.

1236648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 462 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 1236648 is about 1112.0467616067. The cubic root of 1236648 is about 107.3368138818.

The spelling of 1236648 in words is "one million, two hundred thirty-six thousand, six hundred forty-eight".