263488 has 28 divisors (see below), whose sum is σ = 548640. Its totient is φ = 125312.

The previous prime is 263443. The next prime is 263489. The reversal of 263488 is 884362.

It is a happy number.

It is a super-2 number, since 2×263488² = 138851852288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263489) by changing a digit.

263488 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383 + ... + 1561.

2²⁶³⁴⁸⁸ 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 263488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274320).

263488 is an abundant number, since it is smaller than the sum of its proper divisors (285152).

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

263488 is a wasteful number, since it uses less digits than its factorization.

263488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 204 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 263488 is about 513.3108220172. The cubic root of 263488 is about 64.1091886104.

The spelling of 263488 in words is "two hundred sixty-three thousand, four hundred eighty-eight".