18234090 has 96 divisors (see below), whose sum is σ = 54902016. Its totient is φ = 4112640.

The previous prime is 18234089. The next prime is 18234103. The reversal of 18234090 is 9043281.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64750 + ... + 65030.

It is an arithmetic number, because the mean of its divisors is an integer number (571896).

Almost surely, 2^18234090 is an apocalyptic number.

18234090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18234090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27451008).

18234090 is an abundant number, since it is smaller than the sum of its proper divisors (36667926).

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

18234090 is a wasteful number, since it uses less digits than its factorization.

18234090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 401 counting only the distinct ones).

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

The square root of 18234090 is about 4270.1393419887. The cubic root of 18234090 is about 263.2053411363.

The spelling of 18234090 in words is "eighteen million, two hundred thirty-four thousand, ninety".