263106240 has 56 divisors (see below), whose sum is σ = 835365360. Its totient is φ = 70161408.

The previous prime is 263106211. The next prime is 263106247. The reversal of 263106240 is 42601362.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 263106240.

It is not an unprimeable number, because it can be changed into a prime (263106247) 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, 136075 + ... + 137994.

Almost surely, 2^263106240 is an apocalyptic number.

263106240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263106240 is an abundant number, since it is smaller than the sum of its proper divisors (572259120).

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

263106240 is a wasteful number, since it uses less digits than its factorization.

263106240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274089 (or 274079 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 263106240 is about 16220.5499290252. The cubic root of 263106240 is about 640.7821167358.

The spelling of 263106240 in words is "two hundred sixty-three million, one hundred six thousand, two hundred forty".