263224240 has 40 divisors (see below), whose sum is σ = 621143280. Its totient is φ = 103716096.

The previous prime is 263224237. The next prime is 263224249. The reversal of 263224240 is 42422362.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (263224249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19195 + ... + 29914.

It is an arithmetic number, because the mean of its divisors is an integer number (15528582).

Almost surely, 2^263224240 is an apocalyptic number.

263224240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263224240 is an abundant number, since it is smaller than the sum of its proper divisors (357919040).

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

263224240 is a wasteful number, since it uses less digits than its factorization.

263224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49189 (or 49183 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 263224240 is about 16224.1868825529. The cubic root of 263224240 is about 640.8778967888.

The spelling of 263224240 in words is "two hundred sixty-three million, two hundred twenty-four thousand, two hundred forty".