1263488 has 16 divisors (see below), whose sum is σ = 2517360. Its totient is φ = 631680.

The previous prime is 1263487. The next prime is 1263499. The reversal of 1263488 is 8843621.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×1263488² = 3192803852288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4808 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (157335).

2^1263488 is an apocalyptic number.

It is an amenable number.

1263488 is a deficient number, since it is larger than the sum of its proper divisors (1253872).

1263488 is an frugal number, since it uses more digits than its factorization.

1263488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9885 (or 9873 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1263488 is about 1124.0498209599. The cubic root of 1263488 is about 108.1078027379.

The spelling of 1263488 in words is "one million, two hundred sixty-three thousand, four hundred eighty-eight".