18288234 has 32 divisors (see below), whose sum is σ = 40824000. Its totient is φ = 6068592.

The previous prime is 18288211. The next prime is 18288247. The reversal of 18288234 is 43288281.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13897 + ... + 15155.

It is an arithmetic number, because the mean of its divisors is an integer number (1275750).

Almost surely, 2^18288234 is an apocalyptic number.

18288234 is an abundant number, since it is smaller than the sum of its proper divisors (22535766).

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

18288234 is a wasteful number, since it uses less digits than its factorization.

18288234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1533 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 18288234 is about 4276.4744825615. The cubic root of 18288234 is about 263.4656028707.

The spelling of 18288234 in words is "eighteen million, two hundred eighty-eight thousand, two hundred thirty-four".