263316942 has 48 divisors (see below), whose sum is σ = 658150272. Its totient is φ = 74526480.

The previous prime is 263316923. The next prime is 263316947. The reversal of 263316942 is 249613362.

263316942 is a `hidden beast` number, since 2 + 633 + 16 + 9 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 263316897 and 263316906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263316947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3717 + ... + 23247.

It is an arithmetic number, because the mean of its divisors is an integer number (13711464).

Almost surely, 2^263316942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263316942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329075136).

263316942 is an abundant number, since it is smaller than the sum of its proper divisors (394833330).

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

263316942 is a wasteful number, since it uses less digits than its factorization.

263316942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19653 (or 19650 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 263316942 is about 16227.0435384885. The cubic root of 263316942 is about 640.9531224972.

The spelling of 263316942 in words is "two hundred sixty-three million, three hundred sixteen thousand, nine hundred forty-two".