90288844 has 6 divisors (see below), whose sum is σ = 158005484. Its totient is φ = 45144420.

The previous prime is 90288841. The next prime is 90288851. The reversal of 90288844 is 44888209.

It is a self number, because there is not a number n which added to its sum of digits gives 90288844.

It is not an unprimeable number, because it can be changed into a prime (90288841) 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 as a sum of consecutive naturals, namely, 11286102 + ... + 11286109.

Almost surely, 2^90288844 is an apocalyptic number.

It is an amenable number.

90288844 is a deficient number, since it is larger than the sum of its proper divisors (67716640).

90288844 is a wasteful number, since it uses less digits than its factorization.

90288844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22572215 (or 22572213 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 90288844 is about 9502.0442011180. The cubic root of 90288844 is about 448.6193800513.

The spelling of 90288844 in words is "ninety million, two hundred eighty-eight thousand, eight hundred forty-four".