90287306 has 16 divisors (see below), whose sum is σ = 143867016. Its totient is φ = 42349056.

The previous prime is 90287303. The next prime is 90287321. The reversal of 90287306 is 60378209.

It can be written as a sum of positive squares in 4 ways, for example, as 51337225 + 38950081 = 7165^2 + 6241^2 .

It is a super-3 number, since 3×90287306³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (90287303) 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 in 7 ways as a sum of consecutive naturals, for example, 6590 + ... + 14966.

Almost surely, 2^90287306 is an apocalyptic number.

90287306 is a deficient number, since it is larger than the sum of its proper divisors (53579710).

90287306 is a wasteful number, since it uses less digits than its factorization.

90287306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8713.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 90287306 is about 9501.9632708194. The cubic root of 90287306 is about 448.6168327432.

The spelling of 90287306 in words is "ninety million, two hundred eighty-seven thousand, three hundred six".