90523018 has 8 divisors (see below), whose sum is σ = 136598112. Its totient is φ = 44990316.

The previous prime is 90523003. The next prime is 90523061. The reversal of 90523018 is 81032509.

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

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135180 + ... + 135847.

It is an arithmetic number, because the mean of its divisors is an integer number (17074764).

Almost surely, 2^90523018 is an apocalyptic number.

90523018 is a deficient number, since it is larger than the sum of its proper divisors (46075094).

90523018 is a wasteful number, since it uses less digits than its factorization.

90523018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271196.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 90523018 is about 9514.3585175250. The cubic root of 90523018 is about 449.0068930478.

The spelling of 90523018 in words is "ninety million, five hundred twenty-three thousand, eighteen".