90243972288 has 112 divisors (see below), whose sum is σ = 279263856000. Its totient is φ = 28498086144.

The previous prime is 90243972263. The next prime is 90243972289. The reversal of 90243972288 is 88227934209.

It is a happy number.

90243972288 is a `hidden beast` number, since 9 + 0 + 24 + 397 + 228 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (90243972289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1341498 + ... + 1407161.

Almost surely, 2^90243972288 is an apocalyptic number.

It is an amenable number.

90243972288 is an abundant number, since it is smaller than the sum of its proper divisors (189019883712).

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

90243972288 is a wasteful number, since it uses less digits than its factorization.

90243972288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748699 (or 2748683 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 90243972288 in words is "ninety billion, two hundred forty-three million, nine hundred seventy-two thousand, two hundred eighty-eight".