18067280 has 120 divisors (see below), whose sum is σ = 53434080. Its totient is φ = 5617920.

The previous prime is 18067279. The next prime is 18067289. The reversal of 18067280 is 8276081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18067289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42911 + ... + 43329.

It is an arithmetic number, because the mean of its divisors is an integer number (445284).

Almost surely, 2^18067280 is an apocalyptic number.

18067280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18067280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26717040).

18067280 is an abundant number, since it is smaller than the sum of its proper divisors (35366800).

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

18067280 is a wasteful number, since it uses less digits than its factorization.

18067280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18067280 is about 4250.5623157413. The cubic root of 18067280 is about 262.4002584025.

It can be divided in two parts, 180 and 67280, that multiplied together give a square (12110400 = 3480²).

The spelling of 18067280 in words is "eighteen million, sixty-seven thousand, two hundred eighty".