90027998 has 8 divisors (see below), whose sum is σ = 135721200. Its totient is φ = 44787600.

The previous prime is 90027961. The next prime is 90028007. The reversal of 90027998 is 89972009.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112703 + ... + 113498.

It is an arithmetic number, because the mean of its divisors is an integer number (16965150).

Almost surely, 2^90027998 is an apocalyptic number.

90027998 is a deficient number, since it is larger than the sum of its proper divisors (45693202).

90027998 is a wasteful number, since it uses less digits than its factorization.

90027998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226402.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 90027998 is about 9488.3084899259. The cubic root of 90027998 is about 448.1869403452.

The spelling of 90027998 in words is "ninety million, twenty-seven thousand, nine hundred ninety-eight".