1263744 has 48 divisors (see below), whose sum is σ = 3639870. Its totient is φ = 420864.

The previous prime is 1263701. The next prime is 1263751. The reversal of 1263744 is 4473621.

It can be written as a sum of positive squares in only one way, i.e., 1166400 + 97344 = 1080^2 + 312^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 604 + ... + 1700.

2^1263744 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 1263744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1819935).

1263744 is an abundant number, since it is smaller than the sum of its proper divisors (2376126).

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

1263744 is a wasteful number, since it uses less digits than its factorization.

1263744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1102 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 1263744 is about 1124.1636891485. The cubic root of 1263744 is about 108.1151036194.

Subtracting from 1263744 its product of digits (4032), we obtain a cube (1259712 = 108³).

The spelling of 1263744 in words is "one million, two hundred sixty-three thousand, seven hundred forty-four".