90028185216 has 32 divisors (see below), whose sum is σ = 239137368000. Its totient is φ = 30009394944.

The previous prime is 90028185209. The next prime is 90028185257. The reversal of 90028185216 is 61258182009.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117223816 + ... + 117224583.

It is an arithmetic number, because the mean of its divisors is an integer number (7473042750).

Almost surely, 2^90028185216 is an apocalyptic number.

90028185216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

90028185216 is an abundant number, since it is smaller than the sum of its proper divisors (149109182784).

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

90028185216 is a wasteful number, since it uses less digits than its factorization.

90028185216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234448416 (or 234448404 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 90028185216 in words is "ninety billion, twenty-eight million, one hundred eighty-five thousand, two hundred sixteen".