263375872 has 44 divisors (see below), whose sum is σ = 554245720. Its totient is φ = 124747776.

The previous prime is 263375869. The next prime is 263375873. The reversal of 263375872 is 278573362.

It is not an unprimeable number, because it can be changed into a prime (263375873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12688 + ... + 26224.

Almost surely, 2^263375872 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 263375872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277122860).

263375872 is an abundant number, since it is smaller than the sum of its proper divisors (290869848).

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

263375872 is a wasteful number, since it uses less digits than its factorization.

263375872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13576 (or 13558 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 263375872 is about 16228.8592328605. The cubic root of 263375872 is about 641.0009337645. Note that the first 3 decimals are identical.

The spelling of 263375872 in words is "two hundred sixty-three million, three hundred seventy-five thousand, eight hundred seventy-two".