90285384 has 32 divisors (see below), whose sum is σ = 257958720. Its totient is φ = 25795776.

The previous prime is 90285383. The next prime is 90285389. The reversal of 90285384 is 48358209.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (90285383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268539 + ... + 268874.

It is an arithmetic number, because the mean of its divisors is an integer number (8061210).

Almost surely, 2^90285384 is an apocalyptic number.

It is an amenable number.

90285384 is an abundant number, since it is smaller than the sum of its proper divisors (167673336).

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

90285384 is a wasteful number, since it uses less digits than its factorization.

90285384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537429 (or 537425 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 90285384 is about 9501.8621332873. The cubic root of 90285384 is about 448.6136493954.

The spelling of 90285384 in words is "ninety million, two hundred eighty-five thousand, three hundred eighty-four".