1229648 has 20 divisors (see below), whose sum is σ = 2723040. Its totient is φ = 526944.

The previous prime is 1229647. The next prime is 1229663. The reversal of 1229648 is 8469221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5378 + ... + 5601.

It is an arithmetic number, because the mean of its divisors is an integer number (136152).

2^1229648 is an apocalyptic number.

It is an amenable number.

1229648 is an abundant number, since it is smaller than the sum of its proper divisors (1493392).

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

1229648 is a wasteful number, since it uses less digits than its factorization.

1229648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10994 (or 10988 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 1229648 is about 1108.8949454299. The cubic root of 1229648 is about 107.1339051992.

The spelling of 1229648 in words is "one million, two hundred twenty-nine thousand, six hundred forty-eight".