263263128 has 32 divisors (see below), whose sum is σ = 658886400. Its totient is φ = 87657248.

The previous prime is 263263123. The next prime is 263263163. The reversal of 263263128 is 821362362.

It is a happy number.

263263128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263263123) 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, 18013 + ... + 29171.

It is an arithmetic number, because the mean of its divisors is an integer number (20590200).

Almost surely, 2^263263128 is an apocalyptic number.

It is an amenable number.

263263128 is an abundant number, since it is smaller than the sum of its proper divisors (395623272).

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

263263128 is a wasteful number, since it uses less digits than its factorization.

263263128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12151 (or 12147 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 263263128 is about 16225.3852958874. The cubic root of 263263128 is about 640.9094557268.

The spelling of 263263128 in words is "two hundred sixty-three million, two hundred sixty-three thousand, one hundred twenty-eight".