263725780 has 24 divisors (see below), whose sum is σ = 554689800. Its totient is φ = 105325440.

The previous prime is 263725771. The next prime is 263725799. The reversal of 263725780 is 87527362.

263725780 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16418704 + 247307076 = 4052^2 + 15726^2 .

It is a congruent number.

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, 3246 + ... + 23194.

It is an arithmetic number, because the mean of its divisors is an integer number (23112075).

Almost surely, 2^263725780 is an apocalyptic number.

263725780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263725780 is an abundant number, since it is smaller than the sum of its proper divisors (290964020).

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

263725780 is a wasteful number, since it uses less digits than its factorization.

263725780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20619 (or 20617 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 263725780 is about 16239.6360796663. The cubic root of 263725780 is about 641.2846753982.

The spelling of 263725780 in words is "two hundred sixty-three million, seven hundred twenty-five thousand, seven hundred eighty".