18234500 has 24 divisors (see below), whose sum is σ = 39825240. Its totient is φ = 7293600.

The previous prime is 18234499. The next prime is 18234511. The reversal of 18234500 is 543281.

It can be written as a sum of positive squares in 4 ways, for example, as 1522756 + 16711744 = 1234^2 + 4088^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17735 + ... + 18734.

It is an arithmetic number, because the mean of its divisors is an integer number (1659385).

Almost surely, 2^18234500 is an apocalyptic number.

18234500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18234500 is an abundant number, since it is smaller than the sum of its proper divisors (21590740).

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

18234500 is a wasteful number, since it uses less digits than its factorization.

18234500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36488 (or 36476 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 18234500 is about 4270.1873495199. The cubic root of 18234500 is about 263.2073138768.

Adding to 18234500 its reverse (543281), we get a palindrome (18777781).

The spelling of 18234500 in words is "eighteen million, two hundred thirty-four thousand, five hundred".