1306448 has 40 divisors (see below), whose sum is σ = 2978976. Its totient is φ = 547200.

The previous prime is 1306447. The next prime is 1306451. The reversal of 1306448 is 8446031.

It is a Cunningham number, because it is equal to 1143²-1.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2003 + ... + 2573.

2^1306448 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 1306448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1489488).

1306448 is an abundant number, since it is smaller than the sum of its proper divisors (1672528).

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

1306448 is a wasteful number, since it uses less digits than its factorization.

1306448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1306448 is about 1142.9995625546. Note that the first 3 decimals coincide. The cubic root of 1306448 is about 109.3194344154.

The spelling of 1306448 in words is "one million, three hundred six thousand, four hundred forty-eight".