263000028 has 12 divisors (see below), whose sum is σ = 613666760. Its totient is φ = 87666672.

The previous prime is 263000021. The next prime is 263000041. The reversal of 263000028 is 820000362.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 262999968 and 263000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263000021) 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, 10958323 + ... + 10958346.

Almost surely, 2^263000028 is an apocalyptic number.

It is an amenable number.

263000028 is an abundant number, since it is smaller than the sum of its proper divisors (350666732).

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

263000028 is a wasteful number, since it uses less digits than its factorization.

263000028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21916676 (or 21916674 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 263000028 is about 16217.2756035038. The cubic root of 263000028 is about 640.6958804555.

The spelling of 263000028 in words is "two hundred sixty-three million, twenty-eight", and thus it is an aban number.