263263890 has 16 divisors (see below), whose sum is σ = 631833408. Its totient is φ = 70203696.

The previous prime is 263263883. The next prime is 263263933. The reversal of 263263890 is 98362362.

263263890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4387702 + ... + 4387761.

It is an arithmetic number, because the mean of its divisors is an integer number (39489588).

Almost surely, 2^263263890 is an apocalyptic number.

263263890 is an abundant number, since it is smaller than the sum of its proper divisors (368569518).

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

263263890 is a wasteful number, since it uses less digits than its factorization.

263263890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8775473.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 263263890 is about 16225.4087775932. The cubic root of 263263890 is about 640.9100740848.

The spelling of 263263890 in words is "two hundred sixty-three million, two hundred sixty-three thousand, eight hundred ninety".