263980788 has 24 divisors (see below), whose sum is σ = 619087392. Its totient is φ = 87546144.

The previous prime is 263980781. The next prime is 263980819. The reversal of 263980788 is 887089362.

It is a self number, because there is not a number n which added to its sum of digits gives 263980788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263980781) 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, 53470 + ... + 58197.

It is an arithmetic number, because the mean of its divisors is an integer number (25795308).

Almost surely, 2^263980788 is an apocalyptic number.

It is an amenable number.

263980788 is an abundant number, since it is smaller than the sum of its proper divisors (355106604).

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

263980788 is a wasteful number, since it uses less digits than its factorization.

263980788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111871 (or 111869 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 263980788 is about 16247.4855900844. The cubic root of 263980788 is about 641.4913042203.

The spelling of 263980788 in words is "two hundred sixty-three million, nine hundred eighty thousand, seven hundred eighty-eight".