263400738 has 48 divisors (see below), whose sum is σ = 568678656. Its totient is φ = 81243360.

The previous prime is 263400727. The next prime is 263400779. The reversal of 263400738 is 837004362.

It is a junction number, because it is equal to n+sod(n) for n = 263400699 and 263400708.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97056 + ... + 99732.

It is an arithmetic number, because the mean of its divisors is an integer number (11847472).

Almost surely, 2^263400738 is an apocalyptic number.

263400738 is an abundant number, since it is smaller than the sum of its proper divisors (305277918).

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

263400738 is a wasteful number, since it uses less digits than its factorization.

263400738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759 (or 2736 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 263400738 is about 16229.6253191502. The cubic root of 263400738 is about 641.0211059839.

The spelling of 263400738 in words is "two hundred sixty-three million, four hundred thousand, seven hundred thirty-eight".