263423688 has 64 divisors (see below), whose sum is σ = 735981120. Its totient is φ = 77875200.

The previous prime is 263423627. The next prime is 263423689. The reversal of 263423688 is 886324362.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (263423689) 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, 1345 + ... + 22992.

It is an arithmetic number, because the mean of its divisors is an integer number (11499705).

Almost surely, 2^263423688 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 263423688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367990560).

263423688 is an abundant number, since it is smaller than the sum of its proper divisors (472557432).

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

263423688 is a wasteful number, since it uses less digits than its factorization.

263423688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24398 (or 24394 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The square root of 263423688 is about 16230.3323441019. The cubic root of 263423688 is about 641.0397227467.

The spelling of 263423688 in words is "two hundred sixty-three million, four hundred twenty-three thousand, six hundred eighty-eight".