90285871 has 16 divisors (see below), whose sum is σ = 100789920. Its totient is φ = 80346240.

The previous prime is 90285859. The next prime is 90285893. The reversal of 90285871 is 17858209.

It is not a de Polignac number, because 90285871 - 2¹⁵ = 90253103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90285841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39541 + ... + 41761.

It is an arithmetic number, because the mean of its divisors is an integer number (6299370).

Almost surely, 2^90285871 is an apocalyptic number.

90285871 is a deficient number, since it is larger than the sum of its proper divisors (10504049).

90285871 is a wasteful number, since it uses less digits than its factorization.

90285871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 90285871 is about 9501.8877598086. The cubic root of 90285871 is about 448.6144560024.

The spelling of 90285871 in words is "ninety million, two hundred eighty-five thousand, eight hundred seventy-one".