263880704 has 32 divisors (see below), whose sum is σ = 527818890. Its totient is φ = 131923968.

The previous prime is 263880703. The next prime is 263880713. The reversal of 263880704 is 407088362.

It can be written as a sum of positive squares in only one way, i.e., 194658304 + 69222400 = 13952^2 + 8320^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (263880703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28742 + ... + 36794.

Almost surely, 2^263880704 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 263880704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263909445).

263880704 is an abundant number, since it is smaller than the sum of its proper divisors (263938186).

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

263880704 is an frugal number, since it uses more digits than its factorization.

263880704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8083 (or 8055 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 263880704 is about 16244.4053138304. The cubic root of 263880704 is about 641.4102236592.

The spelling of 263880704 in words is "two hundred sixty-three million, eight hundred eighty thousand, seven hundred four".