18254304 has 72 divisors (see below), whose sum is σ = 52324272. Its totient is φ = 6036480.

The previous prime is 18254303. The next prime is 18254323. The reversal of 18254304 is 40345281.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×18254304² = 666439229048832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18254303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69277 + ... + 69539.

It is an arithmetic number, because the mean of its divisors is an integer number (726726).

Almost surely, 2^18254304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18254304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26162136).

18254304 is an abundant number, since it is smaller than the sum of its proper divisors (34069968).

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

18254304 is a wasteful number, since it uses less digits than its factorization.

18254304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 18254304 is about 4272.5055880595. The cubic root of 18254304 is about 263.3025668626.

Adding to 18254304 its reverse (40345281), we get a palindrome (58599585).

The spelling of 18254304 in words is "eighteen million, two hundred fifty-four thousand, three hundred four".