90234205 has 16 divisors (see below), whose sum is σ = 110476080. Its totient is φ = 70737408.

The previous prime is 90234191. The next prime is 90234239. The reversal of 90234205 is 50243209.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 306916 + 89927289 = 554^2 + 9483^2 .

It is a cyclic number.

It is not a de Polignac number, because 90234205 - 2¹¹ = 90232157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90234205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62431 + ... + 63859.

It is an arithmetic number, because the mean of its divisors is an integer number (6904755).

Almost surely, 2^90234205 is an apocalyptic number.

It is an amenable number.

90234205 is a deficient number, since it is larger than the sum of its proper divisors (20241875).

90234205 is a wasteful number, since it uses less digits than its factorization.

90234205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 90234205 is about 9499.1686478344. The cubic root of 90234205 is about 448.5288666152.

The spelling of 90234205 in words is "ninety million, two hundred thirty-four thousand, two hundred five".