263228166 has 24 divisors (see below), whose sum is σ = 600345720. Its totient is φ = 83124576.

The previous prime is 263228149. The next prime is 263228167. The reversal of 263228166 is 661822362.

263228166 is a `hidden beast` number, since 2 + 632 + 2 + 8 + 16 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 263228166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263228167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384495 + ... + 385178.

It is an arithmetic number, because the mean of its divisors is an integer number (25014405).

Almost surely, 2^263228166 is an apocalyptic number.

263228166 is an abundant number, since it is smaller than the sum of its proper divisors (337117554).

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

263228166 is a wasteful number, since it uses less digits than its factorization.

263228166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769700 (or 769697 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 263228166 is about 16224.3078742978. The cubic root of 263228166 is about 640.8810830127.

The spelling of 263228166 in words is "two hundred sixty-three million, two hundred twenty-eight thousand, one hundred sixty-six".