288213226 has 16 divisors (see below), whose sum is σ = 494328384. Its totient is φ = 123457824.

The previous prime is 288213193. The next prime is 288213229. The reversal of 288213226 is 622312882.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 288213191 and 288213200.

It is not an unprimeable number, because it can be changed into a prime (288213229) 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, 33726 + ... + 41398.

It is an arithmetic number, because the mean of its divisors is an integer number (30895524).

Almost surely, 2^288213226 is an apocalyptic number.

288213226 is a deficient number, since it is larger than the sum of its proper divisors (206115158).

288213226 is a wasteful number, since it uses less digits than its factorization.

288213226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10365.

The product of its digits is 18432, while the sum is 34.

The square root of 288213226 is about 16976.8438173884. The cubic root of 288213226 is about 660.5483856718.

The spelling of 288213226 in words is "two hundred eighty-eight million, two hundred thirteen thousand, two hundred twenty-six".