288422090 has 64 divisors (see below), whose sum is σ = 606528000. Its totient is φ = 97634880.

The previous prime is 288422089. The next prime is 288422107. The reversal of 288422090 is 90224882.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 288422090.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 122141 + ... + 124479.

It is an arithmetic number, because the mean of its divisors is an integer number (9477000).

Almost surely, 2^288422090 is an apocalyptic number.

288422090 is an abundant number, since it is smaller than the sum of its proper divisors (318105910).

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

288422090 is a wasteful number, since it uses less digits than its factorization.

288422090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 288422090 is about 16982.9941411990. The cubic root of 288422090 is about 660.7079104634.

The spelling of 288422090 in words is "two hundred eighty-eight million, four hundred twenty-two thousand, ninety".