263023280 has 80 divisors (see below), whose sum is σ = 672706944. Its totient is φ = 95032320.

The previous prime is 263023279. The next prime is 263023283. The reversal of 263023280 is 82320362.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×263023280³ (a number of 26 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (263023283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46190 + ... + 51570.

Almost surely, 2^263023280 is an apocalyptic number.

263023280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263023280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336353472).

263023280 is an abundant number, since it is smaller than the sum of its proper divisors (409683664).

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

263023280 is a wasteful number, since it uses less digits than its factorization.

263023280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454 (or 5448 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 263023280 is about 16217.9924774924. The cubic root of 263023280 is about 640.7147613428.

The spelling of 263023280 in words is "two hundred sixty-three million, twenty-three thousand, two hundred eighty".