90018234 has 24 divisors (see below), whose sum is σ = 201332352. Its totient is φ = 29037960.

The previous prime is 90018223. The next prime is 90018241. The reversal of 90018234 is 43281009.

It is a junction number, because it is equal to n+sod(n) for n = 90018198 and 90018207.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80104 + ... + 81219.

It is an arithmetic number, because the mean of its divisors is an integer number (8388848).

Almost surely, 2^90018234 is an apocalyptic number.

90018234 is an abundant number, since it is smaller than the sum of its proper divisors (111314118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90018234 is a wasteful number, since it uses less digits than its factorization.

90018234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161362 (or 161359 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 90018234 is about 9487.7939480155. The cubic root of 90018234 is about 448.1707370321.

The spelling of 90018234 in words is "ninety million, eighteen thousand, two hundred thirty-four".