90304823 has 8 divisors (see below), whose sum is σ = 103273248. Its totient is φ = 77353344.

The previous prime is 90304793. The next prime is 90304861. The reversal of 90304823 is 32840309.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90304823 - 2¹⁴ = 90288439 is a prime.

It is a super-2 number, since 2×90304823² = 16309922114122658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90304873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10715 + ... + 17187.

It is an arithmetic number, because the mean of its divisors is an integer number (12909156).

Almost surely, 2^90304823 is an apocalyptic number.

90304823 is a deficient number, since it is larger than the sum of its proper divisors (12968425).

90304823 is a wasteful number, since it uses less digits than its factorization.

90304823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8473.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 90304823 is about 9502.8849829933. The cubic root of 90304823 is about 448.6458435135.

The spelling of 90304823 in words is "ninety million, three hundred four thousand, eight hundred twenty-three".