263797938 has 64 divisors (see below), whose sum is σ = 633840000. Its totient is φ = 81041472.

The previous prime is 263797913. The next prime is 263797967. The reversal of 263797938 is 839797362.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34488 + ... + 41436.

It is an arithmetic number, because the mean of its divisors is an integer number (9903750).

Almost surely, 2^263797938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263797938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316920000).

263797938 is an abundant number, since it is smaller than the sum of its proper divisors (370042062).

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

263797938 is a wasteful number, since it uses less digits than its factorization.

263797938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7016 (or 7010 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 263797938 is about 16241.8575908053. The cubic root of 263797938 is about 641.3431573561.

The spelling of 263797938 in words is "two hundred sixty-three million, seven hundred ninety-seven thousand, nine hundred thirty-eight".