263916140 has 24 divisors (see below), whose sum is σ = 555024960. Its totient is φ = 105413888.

The previous prime is 263916091. The next prime is 263916151. The reversal of 263916140 is 41619362.

It is a junction number, because it is equal to n+sod(n) for n = 263916097 and 263916106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5204 + ... + 23556.

It is an arithmetic number, because the mean of its divisors is an integer number (23126040).

Almost surely, 2^263916140 is an apocalyptic number.

263916140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263916140 is an abundant number, since it is smaller than the sum of its proper divisors (291108820).

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

263916140 is a wasteful number, since it uses less digits than its factorization.

263916140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19081 (or 19079 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 263916140 is about 16245.4959911971. The cubic root of 263916140 is about 641.4389335964.

The spelling of 263916140 in words is "two hundred sixty-three million, nine hundred sixteen thousand, one hundred forty".