263857420 has 12 divisors (see below), whose sum is σ = 554100624. Its totient is φ = 105542960.

The previous prime is 263857379. The next prime is 263857421. The reversal of 263857420 is 24758362.

263857420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 263857420.

It is not an unprimeable number, because it can be changed into a prime (263857421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6596416 + ... + 6596455.

It is an arithmetic number, because the mean of its divisors is an integer number (46175052).

Almost surely, 2^263857420 is an apocalyptic number.

263857420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263857420 is an abundant number, since it is smaller than the sum of its proper divisors (290243204).

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

263857420 is a wasteful number, since it uses less digits than its factorization.

263857420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13192880 (or 13192878 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 263857420 is about 16243.6886205074. The cubic root of 263857420 is about 641.3913577667.

The spelling of 263857420 in words is "two hundred sixty-three million, eight hundred fifty-seven thousand, four hundred twenty".